4
Answer: BSet 4: Words in Context (Advanced)
Explanation
PASSAGE
The sociologist argued that the custom, while appearing benevolent, was actually ______, serving to reinforce existing social hierarchies under the guise of charity.
Which choice completes the text with the most logical and precise word or phrase?
A. altruistic
B. insidious✓ Correct
C. obsolete
D. transparent
Detailed Explanation
Something bad that appears good or proceeds subtly is 'insidious'. Insidious means proceeding in a gradual, subtle way, but with harmful effects.
Key Evidence:
• "appearing benevolent"
• "reinforce ... hierarchies"
Why others are wrong: A (Altruistic means truly benevolent.), C (Obsolete means old.), D (Transparent means clear/obvious.).