Katherine Johnson calculated trajectories for NASA’s Mercury missions. Her role went beyond mere computation ______ as a master of analytic geometry, her manual verification was required before John Glenn would orbit Earth.
Which choice completes the text so that it conforms to the conventions of Standard English?
computation, though,
computation though:
computation. Though,
computation though
Correct Answer: C
Choice C is the best answer. It correctly uses a period to end the first sentence. "Though" then acts as a subordinating conjunction starting an introductory dependent clause ("Though as a master of analytic geometry"), which is correctly separated from the main clause by a comma.
Choice A is incorrect because it creates a comma splice. Choice B is incorrect because a colon is not used to connect a sentence to a contrasting introductory clause in this manner. Choice D is incorrect because it creates a fused sentence.