You know that a relationship accounts for a substantial amount of variance. What does this tell you

Question:

You know that a relationship accounts for a substantial amount of variance. What does this tell you about
(a) Its strength?
(b) The consistency that a particular Y is paired with only one X,
(c) The variability in Y scores at each X?
(d) How closely the scatterplot hugs the regression line?
(e) the size of the correlation coefficient?
(f) How well we can predict Y scores?