Assertion (A): Hygiene is defined as the science and practice of maintaining good health.

Reason: (R): Hygiene can be maintained by taking vaccines and antibiotics regularly to keep a person away from diseases.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

Assertion (A): Gambusia is a kind of fish which should be introduced in ponds. These fishes enhance the oxygen content of the water.

Reason: (R): Gambusia fishes selectively devour mosquito larvae from the ponds. Hence used to control the growth of mosquitoes.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.