Explanation:

- The question relates to property or trust law, specifically about creating an interest for an unborn person.

- The law (like Section 13 of the Transfer of Property Act, 1882 in India) limits the vesting of interest in an unborn person until they attain majority (i.e., adulthood, usually 18 years).

- A property interest can be created for an unborn person, but it must vest in them at the latest by the time they reach majority (not youth/old age).

- Option 1: Youth – Not correct, as “youth” is not legally defined for such interests.

- Option 2: Major – This means on attaining majority, which is correct.

- Option 3: up to Minority – Correct, as this refers to the period before becoming a major, i.e., till they’re a minor.

- Option 4: Old age – Not relevant; the law sets the limit at majority.