Dear Friends,
Here is a detailed explanation to this question-
craky wrote:
We now have wireless computer networks, direct-broadcast satellite television, digital wireless cable television networks, global telephone service, and global positioning systems that can pinpoint an individual’s location to a few inches.
A. that can pinpoint an individual’s location to a few inches
B. that can pinpoint an individual’s location in a few inches
C. which can pinpoint an individual’s location to a few inches
D. which can pinpoint an individual’s location of a few inches
E. which should pinpoint an individual’s location to a few inches
Meaning is crucial to solving this problem:Understanding the intended meaning is key to solving this question; the intended meaning of the crucial part of this sentence is that the global positioning systems can pinpoint an individual’s location within a margin of error of a few inches.
Concepts tested here: Meaning + Modifiers• “that” is used to provide information needed to preserve the core meaning of the sentence, and the “comma + which” construction is used to provide extra information.
• “should” is used to convey a sense of obligation/desirability.
A: Correct.1/ This answer choice uses the phrase "can pinpoint...to a few inches", conveying the intended meaning - that the global positioning systems
are practically capable of pinpointing an individual’s location within a margin of error of a few inches.
2/ Option A correctly uses "that" to refer to information needed to preserve the core meaning of the sentence - the degree of accuracy to which the global positioning systems can pinpoint an individual's location.
B:1/ This answer choice alters the meaning of the sentence through the phrase "pinpoint...in a few inches"; the construction of this phrase leads to an incoherent meaning; the intended meaning is that the global positioning systems can pinpoint an individual’s location within a margin of error of a few inches.
C:1/ This answer choice incorrectly uses "which" to refer to information needed to preserve the core meaning of the sentence - the degree of accuracy to which the global positioning systems can pinpoint an individual's location; remember, “that” is used to provide information needed to preserve the core meaning of the sentence, and the “comma + which” construction is used to provide extra information.
D:1/ This answer choice alters the meaning of the sentence through the phrase "pinpoint...of a few inches"; the construction of this phrase leads to an incoherent meaning; the intended meaning is that the global positioning systems can pinpoint an individual’s location within a margin of error of a few inches.
2/ Option D incorrectly uses "which" to refer to information needed to preserve the core meaning of the sentence - the degree of accuracy to which the global positioning systems can pinpoint an individual's location; remember, “that” is used to provide information needed to preserve the core meaning of the sentence, and the “comma + which” construction is used to provide extra information.
E:1/ This answer choice alters the meaning of the sentence through the phrase "should pinpoint"; the use of "should" incorrectly implies that it is
necessary or desirable that the global positioning systems pinpoint an individual’s location within a margin of error of a few inches; the intended meaning is that the global positioning systems
are practically capable of pinpointing an individual’s location within a margin of error of a few inches; remember, “should” is used to convey a sense of obligation/desirability.
2/ Option E incorrectly uses "which" to refer to information needed to preserve the core meaning of the sentence - the degree of accuracy to which the global positioning systems can pinpoint an individual's location; remember, “that” is used to provide information needed to preserve the core meaning of the sentence, and the “comma + which” construction is used to provide extra information.
Hence, A is the best answer choice.To understand the concept of "Which" versus "That" on GMAT, you may want to watch the following video (~2 minutes):
All the best!
Experts' Global Team