The phrase “than they were 200 years ago,” which is required to compare the current state of humanity to that of 200 years ago, is included in the right response. The past tense “were” is appropriately used to denote the point in time that is in the past. By stating “since 1800,” it also establishes a clear chronological context, bringing the rise in average adult height into line with the specified period.
The phrase “than they were 200 years ago,” which is required to compare the current state of humanity to that of 200 years ago, is included in the right response. The past tense “were” is appropriately used to denote the point in time that is in the past. By stating “since 1800,” it also establishes a clear chronological context, bringing the rise in average adult height into line with the specified period.