Since many people is plural, so there isn't only one person, but many of them, the verb also has to be plural. So, the correct answer is A) have.
Because it helps spread ideas and pinpoint what you might be thinking of.
Sherman Alexie's short story, Superman and Me is about a young boy living on an Indian reservation who is constantly trying to defy stereotypes. The main idea of the short story is that Alexie defies those who patronize him and learns to read challenging books at a young age. He dedicates himself to his studies and learns to overcome many obstacles.