The average energy yield per gram of carbohydrate and of fat is

A).4 kcal and 9 kcal, respectively
B).9 kcal and 4 kcal, respectively
C).9 kcal each
D).4 kcal each

The answer is A IF that is 4 kcal for carb and 9 kcal for gat. Those periods after the ) sign bother me. That must be 4 and not .4.

The average energy yield per gram of carbohydrate is 4 kcal, while the average energy yield per gram of fat is 9 kcal.

Therefore, the correct answer is:

A) 4 kcal and 9 kcal, respectively

To determine the average energy yield per gram of carbohydrate and fat, you need to know the number of calories each macronutrient provides.

Carbohydrates provide approximately 4 calories per gram, while fats provide approximately 9 calories per gram.

So, the correct answer is A) 4 kcal and 9 kcal, respectively.