Surveys are considered efficient because they ______.
A)are relatively inexpensive
B)can be completed relatively quickly
C)can measure many variables without increasing time or cost
D)all of these

Question

Quizplus · Accepted Answer

Surveys are efficient because they are relatively inexpensive, can be completed relatively quickly, and can measure many variables without increasing time or cost. Therefore, option D (all of these) is the correct answer.

Surveys Are Considered Efficient Because They ______