Correct Answer:
A. Permanent
The antonym of 'Ephemeral' is Permanent. 'Ephemeral' describes something that lasts for a very short time, is fleeting, or transitory. It refers to things that are temporary and quickly vanish or fade away. Therefore, its direct opposite would be something that lasts indefinitely, is enduring, or never changes, which is precisely what 'permanent' signifies. A permanent state or object is intended to last or remain unchanged indefinitely, directly contrasting with the short-lived nature of something ephemeral.
- Temporary is a synonym of ephemeral, not an antonym. Both words refer to something that is not lasting or enduring for a long time.
- Brief also means of short duration or limited in extent, making it another synonym for ephemeral. It describes something that lasts only a short while, similar to temporary.
- Short is a general term indicating limited extent in space or time. When applied to duration, it functions as a synonym for ephemeral, describing something that doesn't last long, rather than its opposite.