Answer:
Correct option is B.
Explanation:
Sympathetic nervous system is known as primary process to regulate the body fight or fight response, which is also called as sympatho adrenal response. This response end in the adrenal medulla which produce acetylcholine, and active the large secretion of adrenaline also known as epinephrine, and to a less extent noradrenaline or norepinephrine from it.
Sympathetic stimulation is constantly active, and maintain a basic homeostasis level in living organisms.
Answer: option D) phylum
Explanation:
The linnaean system of classification from largest to smallest level is as follows:
Kingdom ---> phylum ---> class ---> order ---> family ---> genus ---> specie.
Since the phylum level consists of organisms with less similar characteristics compared to class, order and genus, we can safely say it has most organisms.
Thus, phylum is the answer.
So?? what?
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