Improve the highlighted part of the sentence. Choose 'No improvement' as an answer if the sentence is grammatically correct.
He enlisting in the army and went to war when he was only eighteen.

Correct option is A

The correct substitution of the highlighted words is (a) enlisted in the army.
Explanation: “He enlisting” is grammatically incorrect. The verb form should be simple past “enlisted” to maintain parallel tense with “went.”
Grammatical rule used:
· In a past narrative, verbs should agree in past tense. Also, “enlist” as a transitive verb is correctly followed by the preposition in when referring to the army or services.
· Example: He enlisted in the navy at a young age.
Information Booster:
“Enlisted at the army” is incorrect because “in” is the appropriate preposition with institutions like army, school, etc.