SAT English Practice Question

In the passage, the author suggests that there are a variety of ways in which people can be influenced by others. The author argues that people who do not support certain ideas may be influenced by the opinions of the people who do support the ideas. In addition, the author suggests that people may be influenced by the way that things are presented. For example, the author notes that people may be more likely to agree with an idea if it is presented in a way that makes it seem more appealing or logical. What is the author's main point?

1. A.people are always influenced by the opinions of others.
2. B.people are more likely to be influenced by the opinions of those who are close to them.
3. C.people are influenced by a variety of factors, including the opinions of others and the way in which ideas are presented.
4. D.people are more likely to be influenced by the opinions of those who are experts in a particular field.