Is a clause that can stand by itself in a simple sentence
I belive the answer is B.
What is the underline words
Answer:
Hey! A good way of ranking up is by answering as many questions as you can. The more questions you answer, the more points and medals you get.
Another way is by completing challenges! Brainly makes challenges like "if you answer X amount of questions in X amount of time, you will get X reward!"
Hope this gave you a good idea on how you can rank up :)