Which Common Shortcoming Is Shared by All Three Descriptive Training

Multiple Choice

Which common shortcoming is shared by all three descriptive training evaluation models described in the textbook?

A) the results and data collected are simply not applicable to most training programs
B) the collection of the data is almost always very expensive and time consuming
C) the results and data collection methods do not account for external variables that may contaminate results
D) implementation of descriptive evaluation models requires mastery of statistical analysis techniques