Question

question 21 of 25
the energy your body gets from food is originally provided by which nuclear reaction?
a. positron emission
b. gamma decay
c. nuclear fusion
d. nuclear fission

Explanation:

The energy in food ultimately comes from the sun. The sun generates energy through nuclear fusion reactions where hydrogen atoms combine to form helium, releasing a vast amount of energy. This energy is used by plants in photosynthesis to make food - energy molecules like glucose. When we eat food, we are getting this energy that originally came from the sun's nuclear fusion. Positron emission and gamma decay are types of radioactive decay processes not related to the energy source of food. Nuclear fission is used in power - plants and is not the source of energy in food.

Answer:

C. Nuclear fusion