I think it is <span>A. </span><span>adjective clause</span>. Because we have here relative pronoun "who" that plays a role of a subject.
Answer: ys
Explanation: They infest the bees' intestines and cause digestive and other health problems. Horrible
"In the bottom" is the prepositional pharse
Stephen Hawking worked on the physics of black holes. He proposed that black holes would emit subatomic particles until they eventually exploded. He also wrote best-selling books, the most famous of which was A Brief History of Time: From the Big Bang to Black Holes (1988).
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