What is photorespiration and why is it considered inefficient?

• A. Photorespiration is the process of converting light energy into chemical energy.
• B. Photorespiration is the breakdown of glucose into carbon dioxide and water.
• C. Photorespiration is the synthesis of ATP and NADPH in the chloroplasts.
• D. Photorespiration is a process where RuBisCO fixes oxygen instead of carbon dioxide, leading to energy waste.

Answer: (D)