29 Upper-atmospheric jets—phenomena whereby electrical discharges cause narrow cones of blue light to briefly burst upward from the tops of thunderclouds—have been observed reaching the ionosphere. The extreme altitudes involved (the ionosphere begins about 80 km above Earth) mark these gigantic jets as outliers; b l a n k the majority of jets reach heights of only 20 to 50 km. Which choice completes the text with the most logical transition?
Correct answer: C (parsed from the explanation — this source omits an answer key for this item)
Explanation
Choice C is the best answer. “Indeed” logically signals that the information that follows—that the majority of jets reach heights of only 20 to 50 km—offers additional emphasis in support of the previous claim that jets reaching the ionosphere (about 80 km above Earth) are outliers. Choice A is incorrect because “nevertheless” illogically signals that the information about most jets reaching heights of only 20 to 50 km contrasts with the previous claim that jets reaching the ionosphere are outliers. Instead, it provides additional emphasis in support of that claim. Choice B is incorrect because “consequently” illogically signals that the information about most jets 31 SAT PRACTICE TEST #11 ANSWER EXPLANATIONS SAT ANSWER EXPLANATIONS n READING AND WRITING: MODULE 2 reaching heights of only 20 to 50 km is a consequence, or result, of some jets being outliers. Instead, it offers additional emphasis in support of the claim that jets reaching the ionosphere are outliers. Choice D is incorrect because “in addition” illogically signals that the information about most jets reaching heights of only 20 to 50 km merely adds to the previous claim that jets reaching the ionosphere are considered outliers. Instead, it provides additional emphasis in support of that claim.
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