What are the factors that affect adequate rest for patients?

1. Hospital work rhythm and environmental conditions can make it difficult for patients to rest.
2. Patients who are ill do not need as much rest as healthy individuals.
3. Rest and sleep are not essential for maintaining good health.
4. Each person has different rest needs and habits.
a) 1 and 4 are correct.
b) 2 and 3 are correct.
c) 1 and 4 are correct.