Question

the sun is the source of ______. a. all energy for your body b. ultraviolet radiation that can cause cancer c. oxygen, which supports our breathing d. none of the above please select the best answer from the choices provided.

Explanation:

• Option A: The energy for our body ultimately comes from the Sun (via food chains, as plants use photosynthesis with solar energy), but "all energy" is a bit simplistic, yet let's check others.
• Option B: The Sun emits ultraviolet (UV) radiation, and excessive UV exposure can cause skin cancer. This is a direct source from the Sun.
• Option C: Oxygen is produced by plants during photosynthesis, but the Sun isn't the source of oxygen itself (plants use CO₂ and water with sunlight to make O₂, but the Sun doesn't "provide" oxygen as a substance).

Between A and B: The Sun's UV radiation is a direct source that can cause cancer. While the body's energy is indirectly from the Sun, the option B is a direct and accurate statement about a source from the Sun (UV radiation causing cancer is a known fact). Option A's "all energy" is less precise (e.g., some energy in the body comes from stored fats, etc., but ultimately the original source is Sun, but B is a more direct and correct statement about a Sun - sourced thing that causes cancer. So B is correct.

Answer:

B. ultraviolet radiation that can cause cancer