Question

A Norwegian explorer named Roald Amundsen reached Antarctica first. He did so on December 14, 1911.

Which choice shows the punctuation and/or conjunction needed to correctly combine the sentences?

A.
first, he

B.
first, and he

C.
first and he

D.
first; and he

Answer 1

B.First,and he

Answer 2

B is correct.
A can't be right because it has no way of connecting the two (I don't remember the actual word for it, but basically: FANBOYS)
C is wrong because there is no comma, it is a run-on sentence this way.
D is wrong because in order for there has to be a conjunction (therefore, however, thus, etc.)