The ________ is the technique of hiding the internal implementation details of an object from its external view

A partner in a title company, who is acting as a broker, may have the parties use that title company if the broker gives the parties a written disclosure.

a. true b. false

Which of the following is a reason why experiments may be hard to administer?

A) It may be impossible to control for the effects of the extraneous variables. B) Competitors may deliberately contaminate the results of a field experiment. C) Both A and B are reasons why experiments may be hard to administer. D) Neither A nor B is a reason why experiments may be hard to administer.