Explanation

Synonyms are wont to refer to words that are nearly or exactly the same in meaning to another word. Example- Pretty is that the synonym of beautiful.

The word ‘perspicacious’ has Picked from the Latin word- Perspicac, which Indicates to Watch clearly clearly.

We know the meaning and the origin of the word ‘perspicacious’. Now, let’s examine its usage:

Example- He was ready to complete the puzzle with the help of his perspicacious mind. Here, we will understand that X was able to complete the puzzle with the help of his observant and intelligent mind.

Let’s examine the given options to seek out the correct answer:

Option a- ‘Clear’ is employed to refer to something that is understandable or comprehensible. Hence, it's an incorrect option.

Option b- ‘Hazy’ refers to an area or a thing that is misty or foggy. Example- The sky was hazy last night. ‘Hazy’ is different in aiming to perspicacious. Hence, it's an incorrect option.

Option c- ‘Shrewd’ Indicates to someone which is perceptive and observatory. Example- He was ready to catch her trap with the help of his shrewd mind. ‘Shrewd’ is analogous in meaning to perspicacious. Hence, it's the correct option.

Option d- ‘Bad- refers to someone or something that's substandard or of poor quality. Example- He kept on following a nasty diet for weeks. ‘Bad’ is different in aiming to perspicacious. Hence, it's an incorrect option.

Final Answer:'

The correct answer is Option ‘c’.