Answer:
"THEREFORE" is a conjunctive adverb.
Step-by-step explanation:
"Therefore" is a conjunction which joins two independent clauses and makes them a sentence. While including a conjunctive adverb, a semicolon is added before a conjunctive adverb and a comma is put after it. However, moreover, nevertheless, consequently, therefore, likewise, etc are some of the conjunctive adverbs.