What Is the Main Adaptive Advantage of the C₄ and CAM

Multiple Choice

What is the main adaptive advantage of the C₄ and CAM photosynthesis strategies over the C₃ strategy?

A) They help the plant synthesize glucose efficiently under dry conditions.
B) They allow the plant to fix carbon under conditions of low CO₂.
C) They allow the plant to fix carbon in cool conditions.
D) They make it possible for the plant to use the Calvin cycle at night.