The program focuses on prevention _______ not treatment _______ of chronic diseases.
6
readingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
prevention—not treatment—
B
prevention, not treatment,
C
prevention; not treatment;
D
prevention: not treatment:
Correct Answer: B
Choice B is the best answer. This question tests comma usage with contrasting elements.
- Context clues: "Not treatment" contrasts with "prevention."
- Meaning: Contrasting phrases beginning with "not" are set off by commas.
- Verify: "The program focuses on prevention, not treatment, of chronic diseases" shows proper contrast.
💡 Strategy: Use commas around contrasting elements introduced by "not," "but," or "rather than."
Choice A is incorrect because while dashes add emphasis, commas are standard for contrast. Choice C is incorrect because semicolons are for independent clauses. Choice D is incorrect because colons don't set off contrasts this way.