Which of the following best describes the direction of the force of friction being applied to the wooden block by the horizontal surface?

We don't know anything about the wooden block or the horizontal surface. 
This problem comes to us with no given information, AND PLUS you  haven't even let us see the list of choices that's supposed to come with it.
The only thing we can tell you is that the force of friction is always in the
direction that's exactly opposite to the direction of motion.  Over and out.