Question 2
In which direction does a frictional force act on an object?
The right answer is the one marked above.
Opposite to the direction of motion. Friction has no direction of its own — it takes the opposite of whichever way the object moves, or tries to move.
Vertically downwards is the weight, and vertically upwards is the normal reaction from the surface. Friction is the third force here, and it acts along the surfaces, not across them.