I guess the answer is B I don't understand the others
They are singular because mathematic and mathematics are the same thing, as well as physics; It's not like there are physic and physics.
C. Negative Capability
An author's skillful representation of the point of views and attitudes of a hobo, a nurse, a corporate CEO and a variety of other diverse characters is termed as the negative capability. This is coined and first used by the poet Keats who dreamed of becoming a famous author. According to him, negative capability is a utmost expression of supreme empathy therefore trying to experience someone's troubles and hardships in order to personally understand them. In the process of viewing conflicts in different point of views with the application of a creative mind, the conflict is resolve.
Bowl shaped, blobs, fly, skin melting
The phrase from this passage which demonstrates that the author is identifying a source of debate is C. "the controversy stems from..."
To stem from something means to originate from, so this would be the logical answer.