Final answer:
The three macronutrients essential for primate survival are carbohydrates, proteins, and lipids, which are vital for energy provision as well as various bodily functions such as growth, repair, and structural integrity of cells.
Step-by-step explanation:
The three macronutrients every primate needs to survive are carbohydrates, proteins, and lipids (fats and oils). These macronutrients are essential as they provide energy, with proteins and carbohydrates supplying about 4 Calories per gram each, and lipids providing approximately 9 Calories per gram. Moreover, these nutrients play critical roles in the body beyond energy provision. Carbohydrates are the body's main source of fuel, proteins are essential for growth and repair, and lipids are important for cell structure and storing energy.
It is important to note that while water is also considered a macronutrient, it does not provide energy but is crucial for many physiological processes. The balance of these macronutrients is essential for the health and survival of primates, including humans, who need to obtain them through their diet as the body cannot produce them in sufficient quantities.