Your company has an Active Directory domain.
A user attempts to log on to the domainfrom a client computer and receives the following message:
“This user account has expired. Ask your administrator to reactivate the account.”
You need to ensure that the user is able to log on to the domain.
What should you do?

A.
Modify the properties of the user account to set the account to never expire.

B.
Modify the properties of the user account to extend the Logon Hours setting.

C.
Modify the default domain policy to decrease the account lockout duration.

D.
Modify the properties of the user account to set the password to never expire.

Explanation:
Answer.Modify the properties of the user account to set the account to never expire.

Further information:
http://technet.microsoft.com/en-us/library/dd145547.aspx
User Properties – Account Tab
Account expires
Sets the account expiration policy for this user. You can select between the following options:
Use Never to specify that the selected account willnever expire. This option is the default for new users.
Select End of and then select a date if you want to have the user’s account expire on a specified date.