What grammar error is evident in the sentence: "The encampment food was so terrible all the cadets were hungry they ate all the MREs."?

The sentence contains a run-on structure, which means it improperly combines two independent clauses without appropriate punctuation or conjunctions. In this case, "The encampment food was so terrible all the cadets were hungry" and "they ate all the MREs" are both independent clauses that could stand alone as complete sentences. They should be separated with a period, a semicolon, or connected with a conjunction to clarify the relationship between the two thoughts.

By only using a conjunction or creating a new sentence, clarity and flow can be significantly improved. This highlights the importance of grammatical structure in ensuring that written communication is clear and comprehensible.