Suppose That a Clinical Researcher Measured Individuals' Scores First on an Inventory

Suppose that a clinical researcher measured individuals' scores first on an inventory of their current state of anxiety and then separately on a measure of their current state of depression. The researcher found that as anxiety scores increased, depression scores also tended to increase. This relationship is an example of a:

A) causal relationship.
B) negative correlation.
C) positive correlation.
D) hypothetical relationship.