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Performing at least one hour of physical aerobic exercise a day is a must for children as it improves muscular fitness and bone health.
A. at least one hour of physical aerobic exercise a day is a must for children as it
B. at least one hour of physical aerobic exercise a day is a must for children as this
C. one hour or more than one hour of physical aerobic exercise a day is a must for children as doing so
D. at least one hour of physical aerobic exercise a day is a must for children because it
E. at least one hour of physical aerobic exercise a day is a must for children as doing so
OA E
Source: Economist Gmat
A. at least one hour of physical aerobic exercise a day is a must for children as it
B. at least one hour of physical aerobic exercise a day is a must for children as this
C. one hour or more than one hour of physical aerobic exercise a day is a must for children as doing so
D. at least one hour of physical aerobic exercise a day is a must for children because it
E. at least one hour of physical aerobic exercise a day is a must for children as doing so
OA E
Source: Economist Gmat
