Answer:
Apollo 13 mission was to be the 3rd mission to land on the moon conducted by the US.
The first main problem was the loss of service module cryogenic oxygen.
The second main problem was an explosion in Oxygen tank #2.
The third main problem was stabilizing the aircraft due to these acidents.
Ground Control helped by aborting the mission and bringing the astronauts back without landing on the moon.
Explanation:
