Correct Answer: A

Meaning focus: “Slums” refers to areas/neighborhoods where housing and sanitation are very poor, often overcrowded and unhealthy.

A Correct. This defines slums as places with poor and unhealthy living conditions.

B Incorrect. That is medicine, not a living area.

C Incorrect. That refers to aid supplies, not neighborhoods.

D Incorrect. Hospitals are institutions, not slum areas.

E Incorrect. “Slums” are places, not people.

Correct Answer: B

Meaning focus: “Effect” means the outcome/consequence of an action, so it is closest to “result.”

A Incorrect. “Advantage” is a positive point, but the sentence says “bad effect.”

B Correct. “Result” matches “effect” as consequence/outcome.

C Incorrect. “Benefit” is positive, unlike “bad effect.”

D Incorrect. “Issue” means a problem/topic, not specifically an outcome of something.

E Incorrect. “Cause” is the reason something happens, the opposite direction from “effect.”

Correct Answer: E

Meaning focus: Trading goods directly without money is called barter. Therefore “exchanged” here is closest to “bartered.”

A Incorrect. “Gave” does not imply receiving something in return.

B Incorrect. “Offered” means presented/proposed, not necessarily traded.

C Incorrect. “Exported” means sent to another country for sale.

D Incorrect. “Attired” means dressed.

E Correct. “Bartered” means exchanged goods for goods.

Correct Answer: C

Meaning focus: “Convert” means to change something into another form. The sentence even shows the transformation: kinetic energy → electricity.

A Incorrect. “Develops” means grows/improves, not transforms into another form.

B Incorrect. “Adapts” means adjusts, not changes form into a different thing.

C Correct. “Changes” captures the idea of conversion.

D Incorrect. “Replaces” means substitutes, not transforms.

E Incorrect. “Produces” means creates/makes, but “converts” emphasizes changing one form of energy into another.

Correct Answer: D

Meaning focus: “Destroy” means to ruin completely. For buildings/homes, the closest synonym is “demolish.”

A Incorrect. “Build” is the opposite.

B Incorrect. “Protect” is the opposite intention.

C Incorrect. “Produce” means make/create.

D Correct. “Demolish” matches “destroy” for structures.

E Incorrect. “Renovate” means improve/repair.