1) Baptism, which the Roman Catholic Church teaches removes original sin while infusing it with sanctifying grace.
As long as we are in the flesh we are separated from God. Baptism does not remove this state of existence.
24 Being justified freely by his grace through the redemption that is in Christ Jesus:
25 Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past,
Outward sign of Grace within is a false theology as it is taught. Grace within is the baptism of the Holy Spirit not the baptism of repentance. The church blurs the lines of what is being stated. Water baptism is not the baptism of Jesus nor is it an outward sign. If a person is baptized in the Holy Spirit it shows in who they are from then forth.
5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
Water baptism has nothing to do with it.
2) Penance, in which one confesses his/her sins to a priest.
Penance is not what is meant by the words of Christ Jesus. The word used is μετάνοια - metanoia. This is a change in the mind. Not confession or reconciliation.
7 I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.
And the scribes and the Pharisees began to reason, saying, Who is this which speaketh blasphemies? Who can forgive sins, but God alone?
So the Church in Rome establishes itself as God but is not God. Jesus is God therefore can and does forgive sin. This is because of metanoia, a change of heart/mind, not because of confession or baptism.
Confessing our sins to one another is correct the offices as set up by the church in Rome is an addition to scripture.
3) The Eucharist, considered the reception and consumption of the actual body and blood of Christ.
Transubstantiation the eating blood and flesh of a human is added by the church in Rome and most likely (without further time consuming research) comes from one of the many ""feasts"" that Christians were admonished to not participate. The Roman church has be well known to alter and absorb traditions of the area they exist, just renamed the time and feasts or celebration to align is someway with cherry picked bible verses and obtuse exegesis.
The word "is" was and should be today understood to be the word "represents".
For example in Mattew 13:37-39 Jesus taught: “He who sows the good seed is the Son of Man. The field is the world, the good seeds are the sons of the kingdom, but the tares are the sons of the wicked one. The enemy who sowed them is the devil, the harvest is the end of the age, and the reapers are the angels”.
Jesus uses for of 'to be' (is and are) to mean “represents” or “symbolizes”.
The sower is the Son of man, meaning of course, that the sower represents the Son of man. tares and good seed do not turn into children the teaching is ridiculous to the point of absurd.
4) Confirmation, a formal acceptance into the church along with special anointing of the Holy Spirit.
Confirmation is to join and agree to the beliefs. This is completely unbiblical. Either a person is or is not Christian. There is no conferring of the Holy Spirit by a confirmation process nor by the baptism of water..
After he had said this, he breathed on the disciples and said, "Receive the Holy Spirit.
Being a Christian
The baptism in the Holy Spirit is more than classes and belonging to a group. It is a full dependence on the Spirit for guidance and strength in all circumstances. As Jesus stated by every Word of God not by bread.
"The fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control" (Galatians 5:22).
5) Anointing of the sick, performed by a priest using oil, anoints the sick person´s forehead and hands with oil; associated not only with bodily healing but with forgiveness of sins. When performed on a dying person it is called Extreme Unction (last rights, final anointing).
Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord:
The oil doesn't heal, Jesus does.
Nowhere is the office of priest given to a certain few.
6) Holy Orders, the process by which men are ordained to clergy.
About 200 A.D. two of the church's leaders, Hippolytus and Tertullian, revived the notion of a "special priesthood," with that title to be worn only by the clergy. By the end of the fourth century that office had been formalized, and the "laity" accepted second-class status in ministry.
7) Matrimony, which provides special grace to a couple.
The marriage bond is sacred.