Final answer:
The hazard severity category defined as a loss of the ability to accomplish the mission is Category 5. This category indicates a serious threat where the predicted collision probability with a near-Earth object is near certain and the potential for extreme physical danger is high.
Step-by-step explanation:
The hazard severity category defined as a loss of the ability to accomplish the mission is Category 5, according to the Torino Impact Hazard Scale.
This category indicates a serious threat where the predicted collision probability with a near-Earth object is near certain and the potential for extreme physical danger is high.
In this category, the impact could cause widespread devastation and have a significant impact on society.