Final answer:
The correct way to determine if you will touchdown at your aim point during a forced approach is to look for the aim point being steady on your windscreen, indicating the correct flight path.
Step-by-step explanation:
To determine if you are going to touchdown at your aim point on a forced approach, look to see if the aim point is steady on your windscreen. If the aim point remains fixed in a specific spot on the windscreen and does not move around as you approach, this indicates that your path is aligned with the aim point and that you are likely to touchdown at that location. If, instead, the aim point moves downward or in any other direction on the windscreen, your trajectory will see you landing ahead of or beyond the aim point. A stationary aim point is the key indicator that you are on the correct flight path to touchdown at the desired location.