The substitution effect indicates that a profit-seeking firm will use

A) more of an input whose price has fallen and less of other inputs in producing a given output.
B) more of all inputs if production costs fall.
C) more of those inputs whose marginal productivity is the greatest.
D) less of an input whose price has fallen and more of other inputs in producing a given output.

Sources that may account for _______ bias include the test language,lack of clarity in testing instructions,or test items asking information that those in another culture may not have had the opportunity to learn.

A) Internal structure
B) Examiner
C) Predictive
D) Content