Answer the following question given this paragraph: 

Plants are somewhat limited by temperature in terms of where they can grow. They need temperatures above freezing while they are actively growing. They also need light, carbon dioxide, and water. These substances are required for photosynthesis. Like most other living things, plants need oxygen. Oxygen is required for cellular respiration. In addition, plants need minerals. The minerals are required to make proteins and other organic molecules.


Q: Photosynthesis requires light, water and what else?

 Choices:

- seasons

- nitrogen

- soil

- carbon dioxide

A:
carbon dioxide
