Biology

The correct answer is C.Photosynthesis.

Here’s why:

Photosynthesis: This process, carried out by plants, algae, and some bacteria, removes carbon dioxide (CO₂) from the atmosphere. During photosynthesis, these organisms use sunlight to convert carbon dioxide and water into glucose (a form of sugar) and oxygen. In doing so, carbon is "fixed" into organic compounds and taken out of the atmosphere.

Let’s go over the other options:

A.Combustion: This process releases carbon dioxide into the atmosphere when organic materials (such as fossil fuels or wood) are burned. Combustion adds carbon to the atmosphere, rather than removing it.