Options C and D describe persons explicitly included in the definition of 'employee' under Section 2(f). Option C covers employees employed by or through a contractor [Section 2(f)(i)]. Option D covers apprentices not engaged under the Apprentices Act, 1961 [Section 2(f)(ii)]. Therefore, persons described in C and D are employees.The main part of the definition requires a person to be "employed for wages in any kind of work... in connection with the work of an establishment" AND to "get his wages directly or indirectly from the employer". Option A describes the first part of this conjunctive requirement. Option B describes the second part (using "salary" for "wages"). A person must satisfy both for the main definition to apply.Option B describes "Any person who gets his salary directly or indirectly from the employer". Simply receiving a salary (or wages) from the employer does not, in itself, guarantee that the person is "employed for wages in any kind of work... in connection with the work of the establishment" as required by the Act. For instance, a non-executive director receiving director's fees, or a consultant receiving a fixed monthly payment, might receive funds from the employer but may not be considered "employed for wages" in the specific sense of the Act's definition covering regular employment relationships in connection with the establishment's work. Therefore, a person fitting only the description in B is not necessarily an employee under Section 2(f).