Complex Designs Beyond the Basic 2 × 2 Design Can

Multiple Choice

Complex designs beyond the basic 2 × 2 design can be constructed

A) only by increasing the numbers of levels of each independent variable .
B) either by increasing the numbers of levels of each independent variable or by increasing the numbers of independent variables or by doing both.
C) only by increasing the numbers of independent variables but holding the levels of each at two .
D) none of these