Which of the Studies Below Would Best Help Scientists Predict

Multiple Choice

Which of the studies below would best help scientists predict the future impacts of climate change on wheat production in the United States?

A) A study of wheat production in the United States over the past 100 years
B) A correlation of current wheat production with local temperature and precipitation values
C) Field experiments to compare wheat yields in locations around the country
D) Computer models based on past wheat yields, temperatures, and precipitation
E) Laboratory experiments growing wheat under various temperature and precipitation conditions