Directions: Select the most appropriate antonym of the given word.

Ephemeral

The correct answer is Enduring.

Explanation:
- Ephemeral refers to something that lasts for a very short time, fleeting, or temporary.
- Enduring means lasting over a long period of time, durable, or permanent. Therefore, Enduring is the exact antonym (opposite in meaning) of Ephemeral.

Meanings of the other options:
- Transitory: Lasting only for a short time; temporary (Synonym of Ephemeral).
- Brief: Of short duration; lasting for a short time (Synonym of Ephemeral).
- Momentary: Lasting for a very short time or moment (Synonym of Ephemeral).