The correct answer is becoming an astronomy researcher
For starters, it is the only appositive phrase. It is also non-essential because the sentence conveys full meaning even if it was removed.
Answer: D) Controlled burns duplicate natural fires that have always helped prairies prosper, so they are valuable to our landscape.
Explanation:
Just did this on Apex, so I know that it is correct.
Answer:
I'm pretty sure the answer is And
Explanation: