Which of the following theories argues that the effect of studying something/someone changes the effects of the study?

The best policy concerning recordkeeping is to:

A) retain all records for three years before discarding them B) require written responses instead of substituting checkmarks C) record only those details that cannot be committed to memory D) require only records that provide positive benefits to those involved in the sales process E) require records on all details and processes in order to maintain sales process discipline

Which among the following would represent the most attractive market for new investment?

A) typewriters B) printed newspapers C) compact discs D) video game consoles