This is an example of both
Answer:Our football team had two injured players; we lost the game.
Explanation:One of the most common uses of semicolon is to join two independent clauses without having to appeal to a conjunction (such as "and"). In this case, we have "Our football team had two injured players" and "We lost the game". Both of them are independent clauses, therefore the use of semicolon is correct in this sentence.
It's b) as extremely might be a infinitive phrase
Answer:
Giving a counterargument allows the essay/writing to contain more perspectives that strengthen the claims as more perspectives allow the reader/viewer to see an overall "picture" of the argument. Also, being able to "debunk" the counterargument as false or not strong will help in strengthening your own essay/argument.
Including only your side of the argument leaves the reader/viewer no perspective of the whole topic.