To solve this problem, we need to identify the components required for the dark reaction of photosynthesis, also known as the Calvin cycle.$\newline$The dark reaction does not require light directly, but it depends on the products of the light reaction. Let's analyze each option:$\newline \bullet$A. Light:$\newline$ - The dark reaction does not require light directly. It occurs in the stroma of chloroplasts and uses the products of the light reaction.$\newline \bullet$B. Chlorophyll:$\newline$ - Chlorophyll is essential for capturing light energy during the light reaction, not directly for the dark reaction.$\newline \bullet$