What is the best explanation for the faster times of the group fed a pre-race meal of bread with bananas and honey

Bread, bananas and honey have carbohydrates.

Explanation:

The group fed a pre-race meal of bread with bananas and honey because bread, bananas and honey have high amount of carbohydrates which give quick energy to the athlete. This carbohydrate is a macromolecule which is quickly converted into micromolecule i. e. glucose that is absorbed by the cell and the mitochondria of the cell produces energy in the form of ATP that is used by the athlete in running.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: