Usable chemical energy in food begins as energy. a) heat b) sound c) light d) mechanical motion

The answer is C) light

Light energy as plants get energy from sun in the first place using photosynthesis.Then other animals eat it or human eat it.Then we human eat the animals which ate the plants.Somit begins as light energy from the sun

Explanation:

The speed of light is 3.0 x 10⁸ m/s

We need to find the distance traveled by it in one day.

1 day = 24 hours

1 day = 24 × 3600 seconds

= 86400 s

Now, using the formula of speed to find the distance covered as follows :

Putting all the values, we get :

Hence, light will cover of distance in one day.