Question

multiple-choice question
plants and ____ are major carbon reserviors
water
fossil fuels

Explanation:

The question relates to carbon reservoirs in the carbon cycle. Plants store carbon via photosynthesis. Fossil fuels (e.g., coal, oil) are ancient organic matter rich in carbon, making them major reservoirs. Water is a carbon reservoir but less commonly paired with plants as a "major" one in this context.

Answer:

fossil fuels