The research team collected samples from the forest floor, _______ they carefully documented each specimen's location using GPS coordinates.
1
readingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
and
B
and, they
C
, they
D
and they,
Correct Answer: A
Choice A is the best answer. This question tests comma usage with coordinating conjunctions (FANBOYS).
- Context clues: Two independent clauses are joined by a coordinating conjunction.
- Meaning: The comma before "and" correctly joins two complete thoughts.
- Verify: "The research team collected... floor, and they carefully documented..." flows correctly.
💡 Strategy: Use comma + FANBOYS to join two independent clauses.
Choice B is incorrect because it adds an unnecessary comma after "and." Choice C is incorrect because joining two independent clauses with only a comma creates a comma splice. Choice D is incorrect because placing a comma after "they" incorrectly separates the subject from its verb.