Answer:
If I take in fewer calories than I need, I have a negative energy balance. Hence the answer is option 3.
Step-by-step explanation:
Calories are the measure of energy source which is inside our body. When the food that we take in while eating gets burned and it is measured in calories. Food is required to form energy for the body.
Our body does various functions and works in our day to day life therefore it is needed to take food on daily basis so that the energy to the body is provided to perform all the works.
There is different requirement of energy according to the age and sex. We should take proper diet which is guided by some expert on diet nutrition expert.