Final answer:
The correlation coefficient -0.82 represents the strongest relationship between two variables.
Step-by-step explanation:
The correlation coefficient indicates the strength and direction of the relationship between two variables in a scatter plot. In this case, we are looking for the correlation coefficient that represents the strongest relationship.
In the given options, the correlation coefficient -0.82 represents the strongest relationship, as it is closest to -1. A correlation coefficient of -1 indicates a perfect negative relationship, where one variable decreases as the other variable increases.