To lose weight your need to subtract 10–20 percent of
a. fat calories eaten daily.
b. your total calories needs.
c. your total weight to determine the correct weight.
d. none of the above.

The answer is letter B.

To lose weight you need to lessen your daily caloric intake. Losing weight entails a person to be involved in regular exercise and a proper diet. This practice is always about energy exchange where a person's diet should be proportionate to his energy production. The less calories you put in your body and the more you move or exercise, the higher the chances of you losing weight. A food diary can be used to keep track of your daily caloric intake.