If a force is applied to a box, causing it to accelerate to the right, the friction force acting on the box will be directed to the left. This is because friction opposes the motion of the box. Drag, which primarily applies when the box is moving through a fluid (like air), would also oppose the direction of motion, meaning it would be directed to the left as well.
Therefore, both friction and drag act to the left, opposing the applied force and thus affecting the net force on the system.
So the answer is left.