Fog is formed by water vapor condensing in the air.
Fog when driving, fog is an obstacle or a hindrance that makes things obscure.
Hindrances to driving are formed by water vapor condensing in the air.
What can be water vapor condensing in air be a hindrance to?
Options:
a. eating
b. driving
c. survival
d. rain
e. movement
f. farming
g. vehicles
h. cooking