Question

please help : )

To determine the favorite television programs of people in his age group, Jacob surveyed a group of his closest friends.

What is the most likely reason for bias in Jacob's survey?

A.
Some people among Jacob's friends may not watch much television.

B.
Friends sometimes joke around and may not give honest answers to the survey.

C.
Some of Jacob's friends may not want him to know their favorite programs.

D.
The group is not likely to be representative of all people in Jacob's age group.