Answer: Adhere to, Stand by
Explanation: “To keep the project as simple as possible, it is best to choose only one topic and adhere to it”
“To keep the project as simple as possible, it is best to choose only one topic and stand by it”
Hope that helps!
All of them except for the 3rd sentence are correct :)
That would be a relative pronoun
Answer:
We need more in this to answer it.
sorry...
Explanation: