At what age is the age of majority attained in India?

In India, the age of majority is attained at 18 years. This is defined by the Indian Majority Act of 1875, which states that a person who has completed the age of 18 years is considered to have attained majority and is thus able to enter into contracts, sue or be sued, and perform other legal acts as an adult. This legislation was enacted to provide a clear legal framework regarding the responsibilities and rights of individuals once they reach this age of maturity.

Understanding the significance of the age of majority is essential, as it marks the transition from childhood to adulthood in the eyes of the law, allowing individuals to make independent decisions and assume full legal responsibility for their actions. The other ages listed in the options do not align with this legal definition. For instance, 21 years was previously the age used in some contexts, but it has been updated to 18 years for most legal purposes. Therefore, 18 years is the correct answer as it reflects the current legal standard in India.