The cost-benefit principle states that a. an action should always be taken if, and only if, the cost outweighs the benefit. b. the benefits of an action are worth it, no matter the cost. c. an action should be taken if, and only if, the benefit from taking it is greater than the cost. d. the cost of an action is only worth the benefit if more than one million people will benefit.

Ineed . read the passage, and choose the two (2) inferences that are most firmly based on the given information. although lie detector tests are based on a sound principle, they are not alwaysaccurate. the test is based on the fact that people become emotionally “stirred up”when they lie. the lie detector can sense physical changes that accompany suchemotional responses. but an innocent person may react emotionally to a keyquestion.thus, he or she appears to be lying when actually telling the truth. and criminals who lie often may feel no guilt about anything. they can therefore tell huge lies without showing the slightest emotional ripple on the lie detector. without an emotional response, there are no physical responses to detect. 1. criminals never feel any guilt about their crimes. 2. lie detector tests are not foolproof. 3. anyone can easily fool the lie-detector machine. 4. an emotional response by an innocent person