One-word substitution (vocabulary): One who is not easily pleased by anything Select the single best word that matches the description.

Given data

• Trait: difficult to satisfy; very hard to please.

Concept/Approach Look for the personality adjective denoting excessive attention to detail and high standards.

Reasoning through options Fastidious — very attentive to detail; hard to please. Correct. Maiden — unmarried girl/woman; unrelated. Mediaeval — of the Middle Ages; unrelated. Precarious — unsafe/unstable; unrelated to pleasing.