Although we pleaded for long with our father, he remained … that we should not go to the stadium.

Analyze the question

The sentence says that although the children pleaded for a long time, their father "remained ....... that we should not go to the stadium." The word "Although" signals contrast. Pleading would normally make someone give in, but the father did not. So we need a word meaning firm, unmoved, refusing to change his mind.

Explain the concept

This is a vocabulary-in-context question. Look for the signal word ("although" shows contrast) and then test each option against the meaning.

Check each option

• A. callous means cruel or insensitive. It describes a person's character, but we would not say someone "remained callous that..." The structure does not fit.
• B. curious means eager to know or strange. It does not fit the meaning at all.
• C. adamant means refusing to change one's mind or be persuaded. It fits both the meaning and the grammar: "remained adamant that we should not go."
• D. candid means frank or honest. It does not show a refusal to change his mind.

Answer

The father stayed firm despite the pleading, so the best word is adamant.

Tip

"Adamant" is often followed by "that" or "about" (adamant that..., adamant about...). When you see "remained __ that," think of words like adamant, insistent, or firm. Also, always watch for contrast words like although, but, and however, because they point to the meaning of the missing word.