Which of the following is a coordinating conjunction?

The words "although", "because", and "since" are examples of common _______ conjunctions.

I was tired, _____ I managed to accomplish my tasks.

I hurt myself _____ I was playing basketball.

Would you go to Korea _____ travel restrictions are lifted?

You may _____ read the handouts or watch the lecture videos.

Mom will cook _____ spaghetti and roast beef for dinner.

Ye-Ji speaks Spanish not only naturally _____ fluently.

Challenges do not matter ________we are together.

 The main function of a conjunction is to ____ two parts of a sentence.