* Photosynthesis is the process plants use to convert light energy into chemical energy. This process takes place in the chloroplasts of plant cells.

* Inputs: Photosynthesis requires carbon dioxide (CO2) from the air and water (H2O) from the soil.

* Outputs: The outputs of photosynthesis are glucose (C6H12O6), a simple sugar that serves as food for the plant, and oxygen (O2), which is released into the atmosphere.

Let's look at the other options:

* b) carbon dioxide: Carbon dioxide is an input to photosynthesis, not a product.

* c) water: Water is an input to photosynthesis, not a product.

* d) oxygen: Oxygen is a product of photosynthesis, but not the only one.

Therefore, the products of photosynthesis are oxygen and glucose.