require water for survival require silicon for structural support require oxygen for respiration require sunlight for photosynthesis
I gave my students this multiple choice question: There are many different types of living cells on Earth. Which of these characteristics do all living cells have in common?

Only one answer is correct among these 4 choices:
- require water for survival
- require silicon for structural support
- require oxygen for respiration
- require sunlight for photosynthesis

Could you tell me which one is correct?

require water for survival