Correct option is C
The correct synonym of the given word is (c) Transient.
Ephemeral: Lasting for a very short time. (Hindi meaning: अल्पकालिक / क्षणिक)
Example: The beauty of the sunset was ephemeral.
Transient: Lasting for a short period; temporary. (Hindi meaning: अस्थायी / क्षणिक)
Example: His happiness was transient after the exam results.
Synonyms: fleeting, momentary, short-lived, brief
Antonyms: eternal, lasting, permanent, enduring
Meanings of the other options:
· (a) Pleasing: Delightful (आनंददायक) – not a synonym.
· (b) Permanent: Lasting forever (स्थायी) – opposite in meaning.
· (d) Ugly: Unattractive (बदसूरत) – unrelated.