Final answer:
Cutting the ligature near the point of suspension.
Step-by-step explanation:
In a ligature hanging case, the best way to lower the suspended body is by cutting the ligature near the point of suspension. This should be done, if necessary, at a site away from any knots, leaving all knots and the rest of the ligature intact. By doing so, the portions around the neck and at the point of suspension can be preserved for further examination and measurement.