There are three major classes of macronutrients: carbohydrates, lipids, and proteins. All three of these nutrients are needed in relatively large amounts AND they contain Calories (note the capital C which indicates kilocalories) which can be "burned" in your body to create energy for your body
The correct answer is:
a. was completed in 2003
It was started in 1990, and run until 2003 (so we know that the first answer is correct and the second isn't). It provided a big amount of important information, but it' didn't allow anyone to alter their appearance, as this is not something that can be achieved via genetics.
