1) C
2) A
3) Sorry, I don't know this one :/
4) vuelo
5) A
Answer: I think the right answer is 4. it includes all of the above and they correctly help/guide you to eliminate shifts in your writing.
Explanation:
1. Prefiero
2. Tiene
3. Deseas
4. Quieren
5. Debemos
The answer is actually D. Neutral for the first one and C. Indigenous for the second one.
I know these are 100% correct because I just took the quick check. ;)
You gain experience for answering questions.
You lose experience for asking questions.
So, your answer is no.
I hope that this helped!