100% true. Unhealthy food has fat calories which cause weight gain. If the diet is a healthy one with no fat calories, you will not gain fat. Exercise is also key as it burns calories and reduces chances of various diseases that come with being overweight.
Answer:
The abdominal muscles
Explanation: The abdominal muscles are located between the ribs and the pelvis on the front of the body. The abdominal muscles support the trunk, allow movement and hold organs in place by regulating internal abdominal pressure.
The correct answer would be D
It would be heart. I hope this helps