Answer:
Theory 1: They moved and stacked the stones using only their strength. Theory 2: They made have rolled the stone on logs to the locations. Theory 3: They may have shoved the stones along slippery, wet sand to the desired locations. Theory 4: They may have built a ramp of sand which stones were stacked along, and then another ramp would be built on top, and the same process repeated.
Step-by-step explanation:
edge 2021, other answer will also work