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Balrog1978
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I've been scouring the web and haven't got a convincing idea as to how GMAT treats when, in which and during which:
In (1) Are when and in which interchangeable? I thought when refers to a specific time and not time period like "age"?
Could "during which" be a candidate as well - since age is technically a time period?
In (2) I've added a SIXTH answer choice that uses during which instead of era during which. Is F also correct since During which also refers to a time period?
1) His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas.
(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate
OA : B
2) Tom Bradley was mayor of Los Angeles from 1973 to 1993, an era when the city had
transformed from a collection of suburban neighborhoods to the second-largest city in
the United States
.
A. an era when the city had transformed.
B. an era during which the city was transformed.
C. an era that transformed it.
D. during which era the city transformed.
E. during which the city was transformed
F. During which the city was transformed.
OA : B
In (1) Are when and in which interchangeable? I thought when refers to a specific time and not time period like "age"?
Could "during which" be a candidate as well - since age is technically a time period?
In (2) I've added a SIXTH answer choice that uses during which instead of era during which. Is F also correct since During which also refers to a time period?
1) His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in what are now temperate areas.
(A) in which great ice sheets had existed in now currently temperate areas
(B) in which great ice sheets existed in what are now temperate areas
(C) when great ice sheets existed where there were areas now temperate
(D) when great ice sheets had existed in current temperate areas
(E) when great ice sheets existed in areas now that are temperate
OA : B
2) Tom Bradley was mayor of Los Angeles from 1973 to 1993, an era when the city had
transformed from a collection of suburban neighborhoods to the second-largest city in
the United States
.
A. an era when the city had transformed.
B. an era during which the city was transformed.
C. an era that transformed it.
D. during which era the city transformed.
E. during which the city was transformed
F. During which the city was transformed.
OA : B
