George is a college freshman. Each day on his way to class he maps out what he would need to do if there was an active shooter. He always sits by the exit in his classrooms and has an emergency number on speed dial in case of an attack. George's fear is most likely because of all the news reports of school shootings. This illustrates

As you drive in to school, you hear a random radio-show caller arguing that sun exposure really has not been shown to cause skin cancer and that some research suggests that skin cancer is completely genetic and not related to sun exposure at all. at the time, you think that this is a silly argument and that the caller does not know what she is talking about. however, two months later, you are outside without wearing sunscreen, and you find yourself remembering that you had read something about how the sun actually does not cause skin cancer. this process is evidence that has influenced your attitude