This question comes fresh from teaching Mechanics 1; for assessing whether students can draw force diagrams involving motion.
a) Student has selected the diagram where R is not perpendicular to the surface on which the object sits.
b) Student has selected the diagram with an additional force (friction) onto the diagram, where the question states a smooth slope
c) Student has selected the diagram with an additional force in the direction of motion; showing they believe that resultant forces should be drawn on the diagram.
d) Student forgot that acceleration should be represented on the diagram
e) Correct diagram
f) Student has selected a diagram that shows the correct forces, but has forgotten that the weight of the object should include the acceleration due to gravity. (note this could also show the student believes g to be a unit)
More mechanics themed questions to follow.