Questions: Which two main fuels supply energy for physical activity in the body? Sugar and fatty acids Vitamins and minerals Amino acids and water Protein and vitamin B Folate and fiber

The answer is the first one: sugar and fatty acids.

Explanation:

1. Sugar and fatty acids: Correct. These are the primary sources of energy for physical activity. Sugar, in the form of glucose, is used for quick energy, while fatty acids provide sustained energy during prolonged activities.

2. Vitamins and minerals: Incorrect. While essential for various bodily functions, they do not directly supply energy.

3. Amino acids and water: Incorrect. Amino acids are building blocks for proteins, and water is crucial for hydration, but neither directly supplies energy.

4. Protein and vitamin B: Incorrect. Protein can be used for energy but is not a primary source. Vitamin B helps in energy metabolism but does not supply energy itself.

5. Folate and fiber: Incorrect. Folate is a vitamin important for cell function, and fiber aids digestion, but neither provides energy.

Summary: The main fuels for physical activity are sugar (glucose) and fatty acids.