Final answer:
1) -.72
The strongest correlation coefficient among the options is -.72, indicating a stronger relationship than the others and the value of +10.1 is invalid as it exceeds the limit of correlation coefficients which should be between -1 and +1.
Step-by-step explanation:
The correlation coefficient that indicates the strongest relationship between two variables among the options provided is -.72. Correlation coefficients range from -1 to +1, and a coefficient closer to -1 or 1 signifies a stronger relationship. A positive correlation coefficient (e.g., +.54) indicates that both variables increase together, while a negative correlation coefficient (e.g., -.72) means one variable decreases as the other increases. The absolute value of the coefficient (.72) is higher than the absolute values of the other options (.54 and .10), hence it represents a stronger relationship, regardless of the sign. Option 3 (+10.1) is not valid because correlation coefficients cannot exceed the range from -1 to +1.