Among the given options, the correct answer is option 4, the Ninth Five-Year Plan. The question is asking about the Five-Year Plan in which the actual growth performance in India in respect of the GDP (at factor cost) was less than the target set.

Let`s analyze the other options as well:

Option 1: The Sixth Five-Year Plan - This plan was implemented from 1980 to 1985. During this period, India`s economy saw an average annual growth rate of approximately 5.6%, which was slightly higher than the targeted growth rate of 5.2%. Therefore, the actual growth performance exceeded the target.

Option 2: The Seventh Five-Year Plan - Implemented from 1985 to 1990, this plan aimed for an average annual growth rate of 5.0%. However, the actual growth rate achieved during this period was around 6.01%, exceeding the target.

Option 3: The Eighth Five-Year Plan - Implemented from 1992 to 1997, this plan aimed for an average annual growth rate of 5.6%. The actual growth rate achieved during this period was approximately 6.8%, surpassing the target.

Therefore, the only option remaining is option 4, the Ninth Five-Year