I would say D...just because of the greenhouse effect
The central element for all living things is carbon, which is why you might often hear the phrase "carbon-based" lifeforms. Another term is often "organic matter"
The appropriate answer is c. whole-wheat bread. Honey is a rich source of carbohydrate and corn oil margarine is a good source of fats. Farm-raised salmon is a good source of protein. Whole wheat used to make bread is a plant derivative rich in cellulose which is the main component of fiber. Cellulose can only be found in plant cell walls.
