Concept:Identify the misspelled word by checking common spelling patterns and meanings of each option.
Explanation:Option C, 'Alterior', is incorrect. The correct spelling is 'Ulterior'.
The word 'ulterior' means hidden or not openly admitted, often used with 'motives'.
For example: She had ulterior motives for her kindness.
The other options are correctly spelled:
Ephemeral means lasting for a very short time.
Preposterous means absurd or ridiculous.
Paraphernalia refers to equipment or belongings needed for an activity.
Only option C contains a spelling error where the initial letter 'U' is wrongly written as 'A'.
Answer:Option C (Alterior)