The answer is c)
Explanation:
Americans worked hard in factories to produce more equipment for the war effort.
The sentence that has faulty parallel structure is option A
The trip started in Colorado, went through New Mexico, and the the end being California.
Faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form. It does not follow the same grammatical pattern according verb tenses. The correct version would be and ended in Carlifornia
The meaning of the word Inevitable is like something certain was about to happen or something unavoidable, Like " Jasmine knew the end of summer was unavoidable and school would start too soon again" or " Jasmine knew the end of summer was assure and school would start again too soon" either way. I hope this helps !