A user has several random browser windows opening on their computer. Which of the following
programs can be installed on his machine to help prevent this from happening?

A.
Antivirus

B.
Pop-up blocker

C.
Spyware blocker

D.
Anti-spam

Explanation:
Pop-up blockers prevent websites from opening new browser windows without the users consent.
These are often used for advertisements but can also be used to distribute malicious code.