Step 1: Understanding the clues.
All four clues relate naturally to the word “question”: question mark, question doubt (doubt leading to a question), answer to a question, and ask a question.
Step 2: Evaluate each option.
(A) Punctuation – Fits only with mark.
(B) Suspicion – Matches doubt but not others.
(C) Solution – Opposite of answer, does not fit all clues.
(D) Question – Matches all four clues accurately.
(E) Query – Close to question, but does not pair naturally with all clues (e.g., *ask query* is incorrect).
Step 3: Conclusion.
“Question” is the word that connects clearly with all the given clues.