exposure to sea air a nutritional deficiency a microorganism lack of exercise
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Scurvy is a disease that sailors often got on long voyages. It was discovered that scurvy could be prevented by eating oranges and lemons. This suggests that scurvy is a disease caused by
Possibilities:
- exposure to sea air
- a nutritional deficiency
- a microorganism
- lack of exercise

a nutritional deficiency