Scientists Working in the Food System _____

Scientists working in the food system _____.

A) can never be absolutely certain that an experiment has eliminated all of the variables that might influence its results
B) must continue their experiments until they have eliminated all of the variables that might influence the results
C) are required by the FDA to perform,identify,and document all of the possible variables that could influence the results of an experiment
D) rely on absolute certainties in their experiments to ensure food safety in the products that they test and approve