Which of the following statements is correct?

A) The value of the independent variable is determined by the value of the dependent variable.
B) The value of the dependent variable is determined by the value of the independent variable.
C) The dependent variable designates the "cause" and the independent variable the "effect."
D) Dependent variables graph as upsloping lines;independent variables graph as downsloping lines.

The correct statement is that the value of the dependent variable is determined by the value of the independent variable. This is because changes in the independent variable (e.g. dosage level, time) result in changes in the dependent variable (e.g. blood pressure, reaction time). Option C may also be true in some cases, but it is a generalization and may not apply universally. Option A is incorrect as it is the opposite of the correct statement. Option D is also incorrect as there is no correlation between the slope of a line and whether it represents an independent or dependent variable.