Final answer:
Standing waves are formed by reflection, which is the process of waves bouncing off an obstacle and superimposing with incoming waves, causing no net movement.
Step-by-step explanation:
The process that produces standing waves with no net movement is reflection. Standing waves are formed by the superposition of two or more waves moving in opposite directions. This occurs, for instance, on the strings of musical instruments where waves reflect off fixed ends, causing an inversion of the wave, which then interferes with incoming waves to form standing waves.