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Wanda is writing an informational essay about the International Space Station. In her essay, four sections of text have been underlined. In each instance, the underlined text may require a correction or revision. Read Wanda’s article, paying special attention to the underlined text, and then answer the questions that follow.

The International Space Station
(1) The International Space Station is often referred to by its acronym, the ISS. (2) It is a marvel of human achievement. (3) Just a century ago, who could have imagined that we’d have people permanently living in orbit?
(4) The ISS is a relatively small space and only houses about seven astronauts at a time. (5) The ISS also functions as a space laboratory. (6) The astronauts on board conduct a variety of experiments in biology, physics, astronomy, materials science, and space science.
(7) This space station also allows people from different backgrounds to work together in the name of science. (8) In space, there aren’t country boundaries but rather, everyone is looked at as an equal, as a scientist. (9) It’s too bad it can’t be like that on Earth too, we would be so much happier if it was. (10) But in the meantime, at least humans can enjoy such peaceful harmonious conditions on the ISS.


Which sentence correctly uses a subordinating conjunction to combine sentences 5 and 6 into one complex sentence?
A. Since the astronauts on board conduct a variety of experiments in biology, physics, astronomy, materials science, and space science, the ISS also functions as a space laboratory.
B. Either the astronauts onboard conduct a variety of experiments in biology, physics, astronomy, materials science, and space science, or the ISS also functions as a space laboratory.
C. The ISS also functions as a space laboratory, although the astronauts on board conduct a variety of experiments in biology, physics, astronomy, materials science, and space science.
D. The ISS also functions as a space laboratory, yet the astronauts on board conduct a variety of experiments in biology, physics, astronomy, materials science, and space science.

All Answers 1

Answered by GPT-5 mini AI
A

"Since" is a subordinating conjunction that correctly links the dependent clause (why the ISS functions as a lab) to the independent clause. Options B and D use coordinating/correlative conjunctions, and C uses "although," which creates an illogical contrast.