Answer:
Option A
And
Step-by-step explanation:
A transitional word is a word in a sentence, that is used to join clauses or phrases that make up a sentence together. They are commonly known as conjunctions.
In this sentence, the prominent conjunction is the word "and". This is because it joins a simple sentence and a clause, to make the compound sentence in the question.
This co -joining of these two parts of the sentence, makes "and" the transition word in the sentence.
Simple sentence: Chekhov wrote hundreds of short stories
transition word: and
Clause: several hilarious one act comedies.
Compound sentence: Chekhov wrote hundreds of short stories and several hilarious one act comedies.