_______ many species have adapted to changing environmental conditions over time.
Which choice completes the text so that it conforms to the conventions of Standard English?
According to evolutionary biologists,
According to evolutionary biologists
According, to evolutionary biologists,
According to evolutionary biologists:
Correct Answer: A
Choice A is the best answer. This question tests comma usage after introductory phrases.
- Context clues: "According to evolutionary biologists" is an introductory prepositional phrase.
- Meaning: Use a comma after introductory phrases before the main clause.
- Verify: "According to evolutionary biologists, many species have adapted..." correctly separates the introduction.
💡 Strategy: Use a comma after introductory prepositional phrases, especially those indicating attribution.
Choice B is incorrect because it lacks the required comma. Choice C is incorrect because the comma after "According" incorrectly splits the phrase. Choice D is incorrect because a colon cannot follow this type of introductory phrase.