The C₄ Pathway Is Necessary in Tropical Plants Because

Multiple Choice

The C₄ pathway is necessary in tropical plants because:

A) at high temperatures, the plants cannot maintain sufficient water levels within the cells.
B) tropical plants do not have proper day/light cycles to maintain the balance of CO₂ necessary for carbohydrate storage.
C) at high temperatures, the oxygenase activity of rubisco is high.
D) All of the above.
E) None of the above.