The correct answer is: A. Younger people generally have a slower metabolism than adults.
Basal metabolism is the amount of energy needed for sustaining life at rest. It is measured by the amount of calories burned when your body is inactive. Metabolism is influenced by numerous factors, such as heredity and age.
Younger people generally have a faster metabolism than adults because they have more muscle mass. Muscle tissue burns more calories than fat tissue, so people with more muscle mass burn more calories at rest. As people age, they lose muscle mass and gain fat mass. This decrease in muscle mass and increase in fat mass leads to a slower metabolism.
Heredity also plays a role in metabolism. Some people are born with a higher metabolism than others. This means that they burn more calories at rest than people with a lower metabolism.
Other factors that can affect metabolism include diet, exercise, and stress. Eating a diet that is high in processed foods and sugar can slow down metabolism. Exercise can help to increase metabolism. Stress can also slow down metabolism.
Overall, metabolism is a complex process that is influenced by many factors. Younger people generally have a faster metabolism than adults because they have more muscle mass. Metabolism is also influenced by heredity, diet, exercise, and stress.