Question: To tie an overhand knot,
Option 0: make a loop that looks like the loop of a roller coaster. Insert one end of the string into the loop. Pull both ends in opposite directions so that the knot becomes tight.
Option 1: make a loop that looks like the loop of a roller coaster. Insert one end of the string into the loop. Pull both ends in the same direction so that the knot becomes tight.
Answer: 0