Tell me the errors please

Larry sent an email to andy. andy didn't open larry's email but still understood what the message was. how did andy determine the message without opening the email?

Drag each label to the correct location on the imagelist the do’s and don’ts of safeguarding your password.keep yourself loggedin when you leave your computer.don’t write your password down and leave it whereothers can find it.share your password with your friends.each time you visit a website,retain the cookies on your computer.use a long password with mixed characters.

Q13 what function does a security certificate perform? a. creates user accounts b. scrambles data c. identifies users d. creates password policies e. provides file access