Which of these choices BEST states the author's purpose in writing this speech?

Proofread the passage and identify the spelling and punctuation errors. no one knows the exect cause of diabetes. most people who get type 2 diabetes are older, but now younger people are being diagnosed with it. like many young people, you are probably thinking, "why should i be concerned about diabetes? " the truth is that both the center for disease control and the american diabetes association are quite alarmed about the increase in type 2 diabetes among young people. information gathered in the 1990s showed a rapid increase in type 2 diabetes in children. during the 2000s, this trend is continue. scientists who study diabetes are finding that 85 percent of the children who are diagnosed with type 2 diabetes are overweight. but that is just one reason for the increase. children are at risk for type 2 diabetes if they are inactive, have a family history of diabetes, or are from african american, american indian, or asian american families.

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.

They always say that juvenile delinquency is a problem. a.)them b.)everyone c.)a noun