If an interrogative quote is at the end of a declarative sentence how do you EX He responded with what about.?

The sentence "He responded with 'What about...?'" is grammatically correct. Here's why:

* Declarative Sentence: The main part of the sentence ("He responded with") is a statement, making it declarative.

* Interrogative Quote: The phrase "What about...?" is a question, making it interrogative.

* Punctuation: The quote marks are used correctly to enclose the question.

Explanation:

This sentence describes someone's response. The response itself is a question, which is why the question mark is placed within the quote marks. The sentence as a whole is declarative because it states a fact: the person responded.