Q- Give any four factors necessary for a healthy person.
Answer- There are several factors that are essential for healthy person. According to the question the four main factors that are necessary for a healthy person are as follows:
1. By vaccination (immunization) against microbial diseases.
2. By providing balanced diet to strengthen individual’s immune system.
3. By personal hygiene measures.
4. By keeping the environment or our surroundings neat and clean.