The scatter graph tells us that the more hours spent studying, the higher grade-point average will be. This shows a positive correlation. So option B and D are incorrect.
Point A also incorrect as the explanatory variable (or the independent variable) is the hours of studying (x-axis). The hours of studying does not depend on the grade BUT the grade does depend on the hours spent studying
The value on the graph is quite close to each other and this indicates the coefficient closes to one. Point B is the correct statement.