Which of the following is true about research on conformity and group size and when everyone except the test subject agrees?

A) There is more conformity with 1 to 2 people versus 3 to 5 people.
B) There is more conformity with 3 to 5 people versus 1 to 2 people.
C) The size of the group doesn't have an effect on conformity.
D) Larger group size always increases conformity.

Research suggests that there is more conformity with 3 to 5 people than with 1 to 2 people when everyone except the test subject agrees. This is known as the "social impact theory," which holds that conformity is influenced by the number of people in the group and their significance to the individual. As the number of people in a group grows, the social pressure to conform increases. However, once the group reaches a certain size (around 5-7 people), the level of conformity tends to level off or even decrease.