Final answer:
Social influence is the social and informal sources of influence individuals use to inspire the actions of others. Examples of social influence include social norms, personal appeals, and social pressure. Informational social influence is one type of social influence where individuals observe the behavior of others in uncertain situations and follow their actions.
Step-by-step explanation:
Social influence is the social and informal sources of influence individuals use to inspire the actions of others. Examples of social influence include social norms, personal appeals, and social pressure. These influences can encourage individuals to conform to certain behaviors or participate in collective actions for the public good. Informational social influence is one type of social influence where individuals observe the behavior of others in uncertain situations and follow their actions. This can be seen in emergency situations or when people are unsure how to react. Overall, social and informal sources of influence play a significant role in shaping individual actions and behaviors.