You read in a medical study that the correlation between two

You read in a medical study that the correlation between two variables is 0.39. This means that

as x gets bigger, y tends to get bigger, in a strong, straight line pattern.

as x gets bigger, y tends to get bigger, but not in a strong, straight line pattern.

as x gets bigger, y tends to get smaller, in a strong, straight line pattern.

as x gets bigger, y tends to get smaller, but not in a strong, straight line pattern.

Solution

Since X and Y are moderately positively correlated (r=0.39 is near to 0.5),