The correct answer is B through the process of elimination. It can't be A since if you were looking through a telescope, you wouldn't actually see the entirety of Earth, itself, revolving around the Sun. It can't be C either since even if the church in the 17th century advocated it, it still isn't supported. It can't be D either since it isn't supported as well. No pieces of evidence are given besides the scientists agreeing on one single answer. However, B has proof of how they agreed on it.
Dr. Casson must be a psychiatrist. A psychiatrist is a medical doctor that has specialized in treating mental health. A psychiatrist treats a number of different mental disorders and prescribes adequate medicaments.
