Explanation
Correct answer: C.
Choice C is the best answer. "Again and again" logically signals that the information in this sentence—that new calculations revealed increasingly precise coordinates for the location of the prime meridian—refers to events that occurred multiple times in the decades after the establishment of the prime meridian in 1884 (which is described in the preceding sentence).
Why the other choices are wrong
Choice A
Choice A is incorrect because "specifically" illogically signals that the information in this sentence provides specific, precise details elaborating on the description of the prime meridian’s establishment in the previous sentence. Instead, the sentence indicates that increasingly precise coordinates were revealed on multiple occasions in the decades following the meridian’s establishment.
Choice B
Choice B is incorrect because "to that end" illogically signals that the information in this sentence is a means of accomplishing a goal established in the previous sentence about the prime meridian’s establishment. Instead, the sentence indicates that increasingly precise coordinates were revealed on multiple occasions in the decades following the meridian’s establishment.
Choice D
Choice D is incorrect because "granted" illogically signals that the information in this sentence is in opposition to the information about the prime meridian’s establishment in the previous sentence. Instead, the sentence indicates that increasingly precise coordinates were revealed on multiple occasions in the decades following the meridian’s establishment.
Student discussion
ibish5195 0 likes
man flip SAT what kind of an answer is again and again I need a girldriend