Option 1 -> Pragyan is the name of the rover of Chandrayaan-3, not the lander.
Option 2 -> Swayam is not associated with the Chandrayaan-3 mission components.
Option 3 -> Saral is not a component of the Chandrayaan-3 mission.
Option 4 -> Vikram is the lander of Chandrayaan-3, named after Dr. Vikram Sarabhai, the father of the Indian space program.
Hence, Option 4: Vikram -> The Chandrayaan-3 mission consists of the Vikram lander and Pragyan rover, with Vikram successfully making a soft landing on the Moon's south polar region on August 23, 2023 -> correct