Which molecule in the picture provides the body with the most energy (gram for gram)? a) glucose b) glycogen c) sucrose d) triglyceride-saturated

The correct answer would be D) triglyceride-saturated

Fats upon oxidation provide the maximum energy per gram. They approximately provide 9 Calories of energy per gram.

In contrast, carbohydrates and proteins only provide 4 Calories of energy per gram.

Glucose, glycogen, and sucrose are examples of carbohydrates whereas saturated triglyceride is an example of fats.  

Thus, triglyceride-saturated would provide the body with the most energy (calories per gram).