30.
The answer is: A
Explanation
The correct option is A: Occupier.
According to Section 2 (n) of the Factories Act, 1948, the occupier of a factory is the person who has ultimate control over the affairs of the factory. This definition applies to any person who owns or manages the factory, whether it is a firm, an association of individuals, or a company. The occupier is responsible for ensuring the health, safety and welfare of the workers in the factory, and for complying with the provisions of the Act and the rules made thereunder. The occupier may delegate some of his duties to a manager, but he cannot absolve himself of the ultimate responsibility and liability.