There is a scam going around to members of many email services asking for an ID and Password to continue the account. An email provider will NEVER ask for a password in an email for an account. Ignore it.
Even though the FROM address seems to be from Yahoo, the REPLY TO address is not Yahoo. When you reply to the email the mail goes to the scam address and not Yahoo.
Reply-To: <firstname.lastname@example.org> <--- This is not Yahoo
From: "Yahoo! Alert"<email@example.com… <--- even though this is
Subject: Important Information Regarding Your Yahoo Account
To report a phishing email with Yahoo, forward the email to firstname.lastname@example.org.