Explanation:

- When using an inclined plane to raise an object, the work done remains the same, but the required force is reduced because it is distributed over a longer distance.

- Option 1: Force to be applied.

- Correct, as the inclined plane reduces the force needed by increasing the distance over which it acts.

- Option 2: Work required.

- The work done remains constant; it's the force and distance trade-off.

- Option 3: Distance covered.

- The distance is actually increased when using an incline.

- Option 4: Friction force.

- Friction might increase due to more surface contact.