Question

Kyla is writing an argument against sending humans into space. Read Kyla’s argument and think about any revisions she needs to make. Then, answer the questions that follow.


Why Space Exploration Shouldn’t Include Humans

 (1) Their are many reasons for continued space exploration. (2) None of these reasons, however, will require that we send humans into space. (3) Using human explorers makes sense in the early years of the space program because we did not have robotic technology yet. (4) In more recent times, technology has allowed us to gather information without any help from humans.
 (5) Robots do not need life support or a return trip home. (6) For these reasons, sending robots into space is much more cost effective than sending humans. (7) In a 2018 report, the Congressional Budget Office projected that cutting human-centered space exploration programs would save $89 billion over a nine-year period. (8) In addition, cutting human exploration programs virtually eliminates any risk to human life.

Which revision of sentence 8 adds a dependent clause that is an adjective clause that tells more about human exploration programs?
A. In addition, willfully cutting human exploration programs virtually eliminates any risk to human life.
B. In addition, cutting human exploration programs virtually eliminates any risk to human life, since the risk is very high.
C. In addition, cutting human exploration programs, which have been a significant focus for decades, virtually eliminates any risk to human life.
D. In addition, cutting human exploration programs virtually eliminates any risk to human life, that is because exploration programs have been a significant focus for decades.

Review Progress

Answer 1

C

The phrase "which have been a significant focus for decades" is an adjective (relative) clause introduced by "which" and modifies "human exploration programs," giving more information about them.