It really doesn't............................
Answer:
commas are needed before coordinating conjunctions, after dependent clauses
Ever since she was a little girl she had been fascinated by dragons. One day she set out to prove their existence real or myth. Many scientist gave her convincing logic for why they couldn't exist. She almost abandoned hope yet her grandmothers words gave her a fresh air of motivation. She started looking elsewhere and found evidence proving they may after all existed.
In the end she never found out which case was true, but believing them kept her childhood dream alive.
What is in bold than the answer will come
C.Swimming is my favorite form of exercise; it gives me energy.
