Final answer:
Informational social influence is more likely when the answer is unclear and when the group has expertise. This type of influence occurs as individuals look to a group for guidance in ambiguous situations or when the group is believed to possess a higher level of knowledge.
Step-by-step explanation:
The question refers to the concept of informational social influence, which occurs when individuals conform to the behavior of a group because they believe the group is competent and has the correct information, particularly when the situation is ambiguous. Under what conditions informational social influence is more likely can be answered as follows:
- When individuals want to fit in with the group, they may conform to the group's actions and beliefs.
- When the answer is unclear, people often look to others for guidance on how to act.
- When the group has expertise, individuals assume that the group's collective knowledge surpasses theirs, making conformity more probable.
The correct answer to the question is d) both b and c, meaning informational social influence is more likely when the answer is unclear (b), and when the group has expertise (c).