Explanation:

Recently, China launched its most ambitious Mars mission Tianwen-1 in an attempt to join the United States in successfully landing a spacecraft on the red planet.

• It is especially striking given that it’s China’s first attempt at a full-on Mars mission.
• China did launch a Mars orbiter called Yinghuo-1 in 2011, but the spacecraft accompanied Russia’s Phobos-Grunt mission. However, the launch failed, leaving the probes trapped in Earth orbit.
• Landing on Mars is notoriously difficult. Only the U.S. has successfully landed a spacecraft on Martian soil, doing it eight times since 1976. There have been eight successful US Mars landings: Viking 1 and Viking 2 (both 1976), Pathfinder (1997), Spirit and Opportunity (both 2004), Phoenix (2008), Curiosity (2012) and InSight (2018). The only other country to land a spacecraft on Mars was the Soviet Union in 1971 and 1973.

Hence option 4th is correct.