Notes: • The cheetah is the fastest land animal. • It can reach about 100 km/h. • The pronghorn of North America can reach about 88 km/h. • The pronghorn can keep up a high speed for much longer. The student wants to emphasize a difference between the two animals. (A) Both animals can run faster than 80 km/h. (B) The cheetah has the higher top speed, whereas the pronghorn can run fast for much longer.
- Goal: a difference, so the sentence must name both animals and contrast them.
- (A) names both animals but states a similarity ("Both").
- (B) names both and uses "whereas" to set top speed against staying power.
Answer: (B)