Correct Answer: RIDES

Solution : Given:
CONDITIONER

Let's compare all the option words with the given word.
First option: RIDES; S is not present in the word CONDITIONER. Therefore, all the letters of RIDES are not present in the word CONDITIONER.
Second option: DRONE; All the letters of DRONE are present in the word CONDITIONER.
Third option: TIER; All the letters of TIER are present in the word CONDITIONER.
Fourth option: TINDER; All the letters of TINDER are present in the word CONDITIONER.

Only RIDES cannot be formed using the letters of the word CONDITIONER. Hence, the first option is correct.