It's not a person, never heard of a place called 'happiness', or I would go there.
It has to be a thing. Meaning it's a noun.
Answer:
The air industry is very complex, and in case of emergency or complications, the operators and workers need to be able to determine the problem.
Explanation:
Air transportation is known for fast travel, but these can also have many complications, and in case of that, workers need to be able to handle such situations, so education is required to be able to handle the programs and to be able to be comprehend what is happening during air travel.
I would say the second choice. None of the other choices are true.
It would be C because you are making an educated assumption based on what you have read
Very few officers in the service ever attain the Rank of General.
