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