Insectivorous plants have evolved an ability to capture and digest insects in addition to their ability to photosynthesize. Which of the following nutritional requirements is most likely being partially met by this "carnivorous" ability of plants?

• A

  Carbon.
• B

  Oxygen.
• Correct answer
  C

  Nitrogen.
• D

  Hydrogen.

Hence, the correct answer is option: 'C'.