The position of a topic sentence often shifts, according to the author and writing style. where is one place the topic sentence should never be?
a. in the conclusion
b. in the body
c. in the introduction
d. in the first paragraph

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.

What is one way that shakespeare uses source material in othello? to establish lago's jealous natureto describe why lago loves the moor's wifeto illustrate lago's skill on a battlefieldto explain how lago became so close to the moon

Name two events that gatsby tells nick about that nick finds suspect . what proof does gatsby offer ?