One of the barriers to greater reliance on ________ is the difficulty of gauging its effectiveness

A financial incentive to encourage someone to make a purchase online can include all of the following, except:

A) consumer promotion B) introductory price C) product personalization D) e-coupon

If a professional singer dies prior to or doing a contract period, his contract to perform is

discharged by objective impossibility. Indicate whether the statement is true or false