- Carbohydrates are made of sugars
- Photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates
- Therefore, photosynthesis converts sunlight into sugar

- Photosynthesis converts sunlight into sugar
- Sunlight is a kind of solar energy
- Therefore, photosynthesis converts solar energy into sugar

- Photosynthesis converts solar energy into sugar
- A leaf performs photosynthesis
- Therefore, a leaf converts solar energy into sugar

Hence, a leaf converts solar energy into sugar
Question
Which of these is a function of a leaf?

Context
- A leaf performs photosynthesis 
- Carbohydrates are made of sugars 
- Photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates 
- Sunlight is a kind of solar energy