Which sentence is an example of faulty coordination? a. Malik enjoys public speaking, and he is a student at the local high school. b. Public speaking terrifies Caroline, but singing comforts her. c. Maya will speak for the team, and she will answer any questions. d. I do not enjoy public speaking, but I have to give a speech anyway.

Obviously, the sentence with faulty coordinations is the first example a. Malik enjoys public speaking, and he is a student at the local high school. Well, at least its structure that is consists of two simple sentences looks improper because they are not connected on semantic value. To make things clear, just look at the other examples which have well-organized structure where you can see logical sequence of the information whereas the first example has no particular connection.