Final answer:
If the average intake equals the average energy requirement, there will be no weight loss or gain.
Step-by-step explanation:
If the average intake/day equals the average energy requirement/day, the person will not lose or gain weight. This is because the amount of energy consumed is equal to the amount of energy used by the body, so there is no surplus or deficit. Essentially, the person's body is in energy balance.
For example, if a person consumes 2000 calories per day and expends 2000 calories through physical activity and metabolic processes, then there will be no change in weight.
It is important to note that individual energy requirements vary based on factors such as age, gender, activity level, and body composition.