You are an IT administrator at a mid-sized company. During a recent security awareness training, a user asks what they should do if they receive an unexpected email from an unknown sender that contains a link. Which of the following actions should you advise the user to take?
Reply to the email to request more information.
Check the sender's email address for legitimacy.
Delete the email without clicking the link.
Click the link to see if it leads to a familiar website.