PTE Reading MC Single Answer
Read the passage and answer the question by selecting the correct response from the options below.
Zebras are members of the horse family. However, these 'stripey horses' are not used for riding. Keen riders have occasionally attempted to try. Although zebras have at times let someone sit on their back, the rider soon discovered that a zebra's neck is stiffer than a horse's, lacking the suppleness that enables riders to control the horse. The structure of a zebra's back also makes it less suitable for riding. It would undoubtedly be possible to breed zebras that would ride well, but with the arrival of the internal combustion engine, there has not been much incentive to do so.
What is the writer's conclusion about zebras?