Answer:
(B) describe a particular position and its subsequent modification
Explanation:
Because during the text many hypotheses are presented, but rather than dismiss the theory, the author details it with the results, until it reaches a valid conclusion. So the first part would present the ideas with the limited knowledge possessed beforehand, following that, ideas are met with reality and are reevaluated.
Answer: The complex sentence comtain a dependent clause.
Explanation: Because one of the rules of complex sentence is dependent, independent clause.