Which of the following statements is correct?

In the 1900s, the leading causes of death were due to lifestyle factors.

Currently, the leading causes of death are due to environmental factors.

Currently, the leading causes of death result from personal behaviors such as your diet, activity level, and whether or not you smoke.

In the 1900s, the leading causes of death included heart disease and strokes.

C: Currently, the leading causes of death result from personal behaviors such as your diet, activity level, and whether or not you smoke.

Explanation:

edg2020

don't worry, but do consult a doctor.

explanation:

having a high metabolism at age 13 is not abnormal.   however, if you are concerned, do consult a doctor.   the doctor may identify a correctable issue, and then you'll have your answer.   in the meantime, there are a few steps you might consider.

first, reflect on just how much physical activity (work out and dancing) you are getting relative to your caloric intake.   keep in mind that if you are interested in gaining weight, you must have a higher caloric intake than output.   second, if eating robust healthy meals is not providing enough calories, you'll need to include high caloric, yet healthy, snacks.   i warn against using an over the counter high-calorie supplement (drink or food) until you have consulted a doctor.