Answer: its the third one
Explanation:
The correct answer is D, because there are three independent clauses in this sentence, all of the clauses are independent. A means that there is at least one dependent clause, which is not the case here, and B means the same. C mean that there is only one independent clause in the sentence.
The revision that correctly uses subordination to connect the groups logically is option B. Smith won out in the end, but not until late in his life. The Geological Society established the Wollaston Medal, its highest annual honor, in 1831; consequently the first Wollaston Medal went to William Smith.
