Ava wants to lose some weight. She undertakes a severe diet. She consumes only 500 calories a day. How will this affect Ava’s body?

Ava will lose a lot of weight because 500 calories is much less than she would need.

Ava will lose some weight, but not much because 500 calories is not a severe diet.

Ava will lose a lot of weight because the body will decrease basal metabolism to increase weight loss.

Ava will lose some weight, but not much. The body will decrease basal metabolism to limit weight loss.