What was a major focus of the 61st Constitutional Amendment?

The correct option is Reduction of voting age from 21 to 18 years.

Step-by-step Explanation:

1. The 61st Constitutional Amendment Act, 1988 (which came into force in 1989) amended Article 326 of the Constitution of India.

2. Article 326 pertains to elections to the House of the People (Lok Sabha) and to the Legislative Assemblies of States on the basis of adult suffrage.

3. By amending Article 326, the voting age for Indian citizens was lowered from 21 years to 18 years. This step was taken to increase youth participation in the democratic process of the country.

4. Looking at the other options:
- Anti-Defection Law was introduced by the 52nd Constitutional Amendment Act, 1985.
- Reservation of seats for women in Panchayats was brought by the 73rd Constitutional Amendment Act, 1992.
- Abolition of Privy Purses was done by the 26th Constitutional Amendment Act, 1971.

Therefore, the major focus of the 61st Constitutional Amendment was the reduction of the voting age from 21 to 18 years.