Which of these statements is true?
a. to lose weight, you must consume fewer calories than energy expended.
b. it is considered safe to lose 10 pounds a week.
c. you must exercise at least one hour a day to lose weight.
d. cycling and swimming are examples of resistance training.

Gain of weight is a huge problm and cause many diseases and increase health prblems
So the correct option and the statement that is true is
 To lose weight, you must consume fewer calories than energy expended
mean u should eat less and walk more and move more
so correct option is 
A 
hope it helps