If there is gum on your shoe where did it likely come from?\nOptions:\n- shelf\n- movies\n- sidewalk\n- water fountain\n- table
Step-by-step reasoning process below:
sidewalk
Sidewalk is a paved path for people at the side of a road.

People generally walk on a sidewalk to get somewhere.

Shoe is a footware that is put on feet before walking.

.

The final answer: sidewalk