Step 1: Understanding the requirement.
The Constitution of India defines the eligibility criteria for membership of the Rajya Sabha, the Upper House of Parliament. One of the key conditions is the minimum age of the candidate.
Step 2: Constitutional rule.
According to Article 84(b) of the Indian Constitution, a person must be at least 30 years old to become a member of the Rajya Sabha. This requirement ensures maturity and adequate understanding of national issues.
Step 3: Eliminating incorrect choices.
25 years is the minimum age for the Lok Sabha, not Rajya Sabha. 35 years and 21 years are not mentioned in the Constitution for any parliamentary eligibility. Hence, they are incorrect.
Step 4: Conclusion.
Therefore, the correct minimum age for becoming a Rajya Sabha member is 30 years.