Need help with these paragraph correction

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.

The last part of the beowulf excerpt recounts how grendel flees into the darkness after suffering a fatal would from beowulf. what part of freytags pyramid best fits this section of the story

Read kabir’s poem “tell me, o swan, your ancient tale,” and answer the question. the swan is an extended metaphor. which of the following best describes this metaphor? a) the meaning of the poem’s extended metaphor is implicit rather than explicit. b) the meaning of the poem’s extended metaphor is neither implicit nor explicit. c) the meaning of the poem’s extended metaphor is explicit rather than implicit. d) the meaning of the poem’s extended metaphor is both implicit and explicit.