Correct option is D
The correct antonym of the given word is (d) Confusing.
Given word – Lucid: Clear, easily understood, intelligible; also shining/bright in some contexts. In discourse, a lucid explanation is transparent, logically arranged, and readily graspable. (Hindi: “स्पष्ट, सुबोध, साफ-सुथरा”)
Example: The professor gave a lucid account of quantum tunneling.
Correct answer word – Confusing: Not clear; puzzling; causing uncertainty or misunderstanding; lacking logical arrangement. (Hindi: “उलझन पैदा करने वाला/भ्रमित करने वाला”)
Example: The manual was so confusing that even experts struggled with it.
Synonyms (of lucid): clear, intelligible, transparent, pellucid.
Antonyms (of lucid): obscure, opaque, confusing, murky.
Meanings of all the other given options:
· (a) Fluent: Able to express oneself easily and articulately (धाराप्रवाह/सहज वक्ता).
· (b) Clear: Easy to understand; free of ambiguity (स्पष्ट/साफ).
· (c) Bright: Giving out or reflecting a lot of light; clever (उज्ज्वल/तेज़).