Step 1: Understanding the Factories Act.
Under the Factories Act, 1948, a "child" is defined as a person who has not completed his fourteenth year of age. This is important for regulating child labor and ensuring that children under the age of 14 are not employed in factories.
Step 2: Explanation of Other Options.
- (a) This definition is incorrect under the Factories Act; the correct age is 14, not 15.
- (c) The Factories Act defines a child as under 14, not 18.
- (d) The age is 14, not 16, for the term "child".
Step 3: Conclusion.
Option (b) is the correct definition of "child" under the Factories Act.