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Answer:
Adjectives need to agree in gender and number with the noun they modify.
A rule that could explain when a sentence is grammatically correct is that a sentence should always end with either a full stop, a question mark, or an exclamation mark.
What is a grammatical rule?
These are rules that ensure that a sentence or phrase is written in such a way that it is grammatically correct.
One such rule is that every sentence should end with a full stop, a question mark, or an exclamation mark. If the sentence doesn't end with these then it is not grammatically right.
Find out more on grammatically correct sentences at https://brainly.com/question/27189863.
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