Most of the food that organisms eat can be traced back to _______. A. soil B. bacteria C. plants D. animals

The answer is C. plants. Here's why:

1. Most organisms, including humans, consume either plants or animals for food.
2. Animals, in turn, also rely on plants for their food, either directly (like a cow eating grass) or indirectly (like a lion eating a gazelle, which eats plants).
3. Plants are the primary producers in the food chain. They convert sunlight into energy through a process called photosynthesis. This energy is then used to convert water and carbon dioxide into glucose, which is a type of sugar that plants use for food.
4. When organisms eat plants, they are getting the energy that the plants have stored in their bodies from photosynthesis. This is why most of the food that organisms eat can be traced back to plants.