Multiple choice

Which of the following elements constitute carbohydrates?

a. Oxygen b. Carbon dioxide c. Hydrogen d. Nitrogen

  1. Both a and b

  2. Both b and c

  3. Both c and d

  4. Both a and c

  5. Both b and d

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. Oxygen and hydrogen, along with carbon, constitute carbohydrates.