### Step-by-Step Derivation & Verification: 1. **Word Meaning**: *Ephemeral* (from Greek *ephemeros* meaning lasting a day) denotes temporary, short-lived, or transient phenomena. 2. **Options Analysis**: - *Transient*: Passing through quickly (Synonym) - *Fleeting*: Lasting for a very short time (Synonym) - *Evanescent*: Quickly fading or disappearing (Synonym) - *Permanent*: Lasting or intended to last indefinitely without change (Antonym) 3. **Conclusion**: The antonym is 'Permanent'. Option (A) is correct.