Which kind of food is recommended to prevent heart disease, cancer, diabetes, high blood pressure, stroke, and weak bones

A．Today you can get calcium without eating any high-fat or high-calorie foods by choosing skim milk or low-fat yogurt.
B．Calcium plays an important role in the movement of protein and nutrients inside cells.
C．You can rely on pills instead of a calcium-rich diet to take enough calcium.
D．If you want to absorb calcium, you should expose yourself to the sun's rays.

A．stop smoking
B．exercise regularly
C．take non-fat diet
D．control their weight