A sentence answers the question what is this paragraph about

Magnesium is the fourth most abundant mineral in the body and is essential to good health. magnesium is needed for more than 300 biochemical reactions in the body. it maintain normal muscle and nerve function, keep bones strong, keep one’s heart rhythm steady, and supports a healthy immune system. magnesium also regulate blood sugar levels, promotes normal blood pressure, and may play a role in energy metabolism and protein synthesis. doctors and scientists are trying to determine whether magnesium may play a role in preventing and managing disorders such as hypertension, cardiovascular disease, and diabetes. which is the main idea of this paragraph? a. the role of magnesium in human nutrition is being studied intensely. b. magnesium may be related to the body’s metabolism and other healthy functions. c. magnesium appears to contribute to hypertension, cardiovascular disease, and diabetes. d. magnesium and a healthy immune system are separate diseases.

Respond to the following prompts in your initial post: 1. explain if this essay is narrative or descriptive and provide reasoning to support your response. 2. describe what you believe the purpose of the essay is an support your answer with information from this week’s material. 3. now that you have identified the purpose of the essay l, explain why you believe the author did or did not achieve her intended purpose.

Pl true or false: a hyphen can indicate that a word has been split up at the end of a line and continues onto the next line.