Choose the one which can be substituted for the given sentence.
A person who is extremely selective or difficult to please

Correct option is C

The correct one-word for the given group of words is (c) Fastidious.
Explanation: Fastidious means very attentive to and concerned about accuracy and detail; extremely hard to please; अत्यधिक चयनशील/नख़रे वाला/बहुत सूक्ष्मता से जाँचने वाला. Such a person demands the finest standards and is easily dissatisfied.
Example: The chef was so fastidious that he rejected vegetables for being a millimeter off in size.
Meanings of the other options:
· Docile: easily managed; submissive; आज्ञाकारी/विनम्र.
· Hostile: unfriendly; antagonistic; शत्रुतापूर्ण.
· Gullible: easily deceived; भोला/सहज विश्वास करने वाला.