When reading a grid reference number corresponding to a grid on a map, you read the pair of numbers corresponding to the what corner of the square.

When reading a grid reference number corresponding to a grid on a map, you read the pair of numbers corresponding to the what corner of the square.

lower-left hand

Box A    points are all close to the downward trendline, that's

strong and negative

Box B    points close to upward trendline, that's

strong and positive

Box C    points scattered from line but generally upward, that looks moderate and positive to me but that doesn't seem to be among the choices so let's go with

weak and positive

Box D   Similar to C but downward, I'd say

moderate and negative