1. Based on the information provided, which of the following best describes the source of the rapid increase in milk
production from 1976 to 2015?
a. Reproduction rates in cows and bulls increased significantly in the 1970s.
b. From the 1970s to the early 2000s, dairy cows were not used for beef production.
C.
Cows were healthier after the 1970s, so they lived longer and produced more milk during their lifetime.
d. Starting in the 1970s, farmers increased the selective breeding of cows and bulls for offspring that
produced more milk.