Final answer:
The wheat plants are conducting photosynthesis, which requires sunlight and results in the production of energy storage molecules such as carbohydrates. Since the wheat is taking in carbon dioxide, it implies that the plants are in sunlight, leading to an increase in ESMs.
Step-by-step explanation:
Wheat plants are photosynthetic autotrophs, meaning they are able to synthesize their own food in the form of carbohydrates through the process of photosynthesis. This process requires carbon dioxide (CO2), water, and sunlight. During photosynthesis, light energy captured from the sun is used to energize electrons which then produce energy-rich molecules such as ATP and NADPH during the light-dependent reactions. These molecules are used in the Calvin cycle to ultimately produce carbohydrates, such as glucose, which are energy storage molecules (ESMs).
Given that the wheat has been taking in carbon dioxide from the air, we can infer that the plants have been engaging in photosynthesis, provided that light is present. As such, the correct answer to the question is that the wheat is indeed in sunlight, and the number of ESMs, such as carbohydrates, has increased as a result of the photosynthesis process. Therefore, option c is the correct choice.