The answer to your question is Option B (YOGA)..
I think its thru blood cells im not sure though.
Answer:
The answer is 2: A series of physical and psychological reactions that occur when you respond to a demanding or threatening situation.
Explanation:
Process of elimination:
1 - You can never completely eliminate stress
3 - Stress doesn't always manifest for a physical threat, it can form because you have a test next period or because you have an upcoming project,
4 - Stress is not always harmful, it also can come and go and you might even feel better afterwards, as in cases of physical stress.
To give evidence supporting the writers belief
I am on the same subject and stuck at this answer.