Answer:
Chrloroplasts
Step-by-step explanation:
Photosynthesis is a process that certain organisms (plants, algae, and special bacteria) undergo to produce their own food. They turn carbon dioxide, water, and light energy from the sun into oxygen and glucose.
The glucose, or sugar, becomes the food for the plant. The chloroplasts in the cells are the site of photosynthesis.
Therefore, the correct answer is 3. chloroplasts.