Step 1: The Eighth Five-Year Plan was implemented after the gap caused by economic instability and political changes in India during the early 1990s.
Step 2: Although it was scheduled to begin in 1990, the plan was postponed due to the Gulf War crisis, inflation, and political transitions.
Step 3: Instead, the years 1990–91 and 1991–92 were covered by annual plans.
Step 4: The Eighth Plan was finally launched in April 1992 and lasted until March 1997.
Step 5: Its main focus areas were: modernization, employment generation, human development, and economic restructuring in line with the 1991 economic reforms.
Step 6: Other options:
- 1990–1995 is incorrect because the plan began later.
- 1993–1998 and 1994–1999 are also incorrect as they don’t match the official plan period.
Thus, the correct answer is $\mathbf1992\ –\ 1997$.