Question of the Day (11-Apr-17)
Answer the question based on the passage given below.
Cattle that are named and treated with a "more personal touch" can increase milk yields by up to 500 pints a year. The study, by the university's School of Agriculture, Food and Rural Development, involved 516 farmers across the UK. Published in the journal Anthrozoos, the study found farmers who named their cows gained a higher yield than the 54% that did not give their cattle names.
Which of the following, if true, most seriously weakens the conclusion of the study?