CompTIA A+ 220-902 Question I-94

A user is having difficulty installing a program in Windows Vista, as the computer appears to stall prior to the installation. Which of the following is the BEST choice of why this is occurring?

A. Aero Settings are not enabled.
B. Power Settings need to be enabled.
C. BitLocker is scanning for corrupt software.
D. UAC is waiting for user input.

Correct Answer: D