Plants use carbohydrates to build things such as cellulose. How do plants acquire these building blocks to build mass?

AThey absorb carbohydrates through the soil.
BThey absorb dissolved carbohydrates via water.
CThey make carbohydrates through the process of photosynthesis.
DThey make carbohydrates through the process of cellular respiration.

Verified Answer :

Plants make carbohydrates through the process of
photosynthesis. When the leaves of the plants absorb the sunlight, they use
this energy to combine water with carbon dioxide. The by-products of mixing carbon
dioxide and water are glucose and cellulose.

Photosynthesis is a unique trait that separate
plants from other living organisms. They can provide the necessary nutrients to
help sustain themselves and survive for longer periods of time. When
carbohydrates are in excess, plants have the ability to store and use them when
one of the ingredients of photosynthesis is not available. 

C) They make carbohydrates through the process of photosynthesis.