If statements: used to run some code "if" a condition is met. Like if lane 1 has no obstacles, then move to lane 1

if tree is near
do _____

if lane 1 is free
do _____
else if lane 2 is free
do _____
else if lane 3 is free
do _____

if tree is near:

do ___ (e.g. stop or change direction)

if lane 1 is free:
do _____ (e.g. move to lane 1)
else if lane 2 is free:
do _____ (e.g. move to lane 2)
else if lane 3 is free:
do _____ (e.g. move to lane 3)

Try placing a "move to lane 1" for lanes 1, 2, and 3 in each empty space in

if lane 1 is free
do _____
else if lane 2 is free
do _____
else if lane 3 is free
do _____

Remember to change the drop-down options to move to the correct lane.

if lane 1 is free:

do move to lane 1
else if lane 2 is free:
do move to lane 2
else if lane 3 is free:
do move to lane 3