Test markets are which of the following type of experiment? a. none of these b. controlled experiment c. exploratory experiment d. field experiment e. laboratory experiment

The correct answer is letter "D": field experiment.

Explanation:

Field experiments are carried out in the same place of observation of the study. These types of experiments are conducted when the interaction between the variables is necessary to test the propositions being questioned.  Field experiments are quantitative, thus, more reliable.

Test markets in surveys, for instance, are considered field experiments.

answer; (d) i believe that the correct answer is ; /// a new invention lowers the cost of production;