Explanation:

Mars missions: In February, Mars will receive a number of terrestrial robotic guests from several countries. 

• United Arab Emirates’ Al Amal (Hope): It is the Arab world’s first interplanetary mission. It will spend two years monitoring the Martian weather and disappearing atmosphere.

China’s Tianwen-1: It consists of an orbiter and a surface rover. If it succeeds, China will become the third country to land anything on Mars. 

• The mission has several objectives including mapping the mineral composition of the surface and searching for sub-surface water deposits.

Nasa’s Perseverance rover: It will land at Jezero Crater and search for any signs of ancient life which may have been preserved in the clay deposits there. It will also store samples of Martian surface to return samples of Mars to Earth.

Chandrayaan-3: In March 2021, the Indian Space Research Organisation (ISRO) is planning to launch its third lunar mission - Chandrayaan-3. It will consist of only a lander and rover, as the previous mission’s orbiter is still functioning and providing data.

• Chandrayaan-1: It launched in 2008 and was one of the first major missions in the Indian space programme. Unfortunately, contact with the satellite was lost less than a year later. 
• Chandrayaan-2: There was a similar mishap with its successor, which consisted of an orbiter, a lander (Vikram) and a lunar rover (Pragyan).
• Significance: Chandrayaan-3 rover will touch down in the lunar south pole’s Aitken basin. It’s of particular interest as it is thought to host numerous deposits of subsurface water ice.

Hence option 4th is correct.