Explanation:

- The first rocket in India was launched on November 21, 1963.

- ?? 1963 (Option 1) - This is the correct year when the first rocket was launched from Thumba Equatorial Rocket Launching Station near Thiruvananthapuram in Kerala.

- 1948 (Option 3) - This was just a year after India's independence, and the country's space program was not yet initiated.

- 1973 (Option 4) - By this time, India's space program was already well underway with various other missions.

- 1977 (Option 2) - This was the period when developments were in progress for later projects, like the SLV.