The spinal cord is the answer you are looking for.
Yes.
But too much of anything is never good. Balanced portions are always important.
Answer:
because they might not want to hire you if you use incorrect grammar or bad words
Explanation:
The answer is source B because it has a listed author who is an expert and it is the governments organization website which are more reliable that a .com website. Source A does not even list the author so you do not know who wrote it could be anyone.