Describe the two basic motives that cause people to conform and the two kinds of social influence ...

Answer:
People want to be liked, people want to be accepted. In order to accomplish this basic goal, we try to be similar to others, to agree with them, in order to gain that acceptance and approval. We can be influenced by appeals to those desires for acceptance. That influence is called normative social influence.
Another motive is to be right. When we're not sure what is correct or right, the only way to have accurate information is to depend on other people's opinions and actions for guidance. We can be influenced by appeals to this desire to be informed, accurate, and/or correct. That influence is called informational social influence.