Economists use the concept of ceteris paribus to examine a change in in a model. Choose one: A. one variable B. two variables C. three or more variables D. the operating assumptions

Which of the following factors would  notcause the supply of labor to shift? select the correct answer below: a) an increase in the amount of education required to perform a jobb) implementation of a new government program that offers child care benefits to workersc) an increase in the number of companies producing a certain productd) all of the above would cause the supply of labor to shift.