Which of the following is not a function of food?

Options

A. Provides us energy
B. Replacs worn out cells.
C. Provides us oxygen
D. Keeps us healthy.

Explanation

To determine which of the following is not a function of food, we will analyze each option provided:

1. **Provides Energy**: Food is essential for providing energy to our bodies. When we consume food, it is broken down into glucose, which is then converted into ATP (adenosine triphosphate), the energy currency of our cells. This energy is used for all bodily functions and activities. Therefore, this option is a function of food.

2. **Replaces Worn Out Cells**: Food also plays a critical role in the repair and maintenance of our body. Nutrients from food, such as proteins, are necessary for the growth and repair of cells. For instance, when cells are damaged, the body utilizes the nutrients from food to create new cells to replace the worn-out ones. Thus, this option is also a function of food.

3. **Provides Oxygen**: This is where we find the incorrect option. Food does not provide oxygen. Instead, oxygen is obtained through the process of breathing, which involves the lungs. The respiratory system is responsible for taking in oxygen from the air, and this process is unrelated to food. Therefore, this option is not a function of food.

4. **Keeps Us Healthy**: Food contributes to our overall health by supplying essential nutrients, vitamins, and minerals. A balanced diet helps maintain bodily functions and supports the immune system. Hence, this option is indeed a function of food.

After analyzing all the options, the correct answer is that **providing oxygen is not a function of food**.