(c) The requirement is to identify the correlation coefficient
that represents the strongest relationship between the independent
and dependent variables. Regression coefficients can
range from –1.00 (perfect negative correlation to 1.00 (perfect
positive correlation, and the closer to –1.00 or 1.00 the stronger
the relationship. Answer (c) is correct because it is the coefficient
closest to –1.00 or 1.00. Answer (a) is incorrect because it
is not possible to have a correlation coefficient greater than 1.00.
Answers (b) and (d) are incorrect because they are both further
from –1.00 or 1.00.