Please send me an answer quick I will really appreciate it. By the way this is a science question just click on the picture and you will see the whole question. Thank you. :)

Hypothesis: The more light there is, the better the plant will grow

Explanation:

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.