An action verb with a direct object is transitive<span> while an action verb with no direct object is </span>intransitive<span>. Some verbs, such as arrive, go, lie, sneeze, sit, and die, are always </span>intransitive<span>; it is impossible for a direct object to follow.</span>
I think it is A because I have this question before and I know it already.
Answer:
B. The subject and topic are similar, so they belong together in the same sentence.
Explanation: