If Plummer asserts a claim against Devon for damages because of his embarrassment, will Plummer prevail?
Yes, if Devon knew that Plummer was about to sit on the chair. 
Yes, if Devon negligently failed to notice that Plummer was about to sit on the chair. 
No, because Plummer suffered no physical harm along with his embarrassment. 
No, if in moving the chair Devon intended only a good-natured practical joke on Plummer