Question

combustible insulation exposed in garages
significantly reduces heating costs
protects cars from rusting
eliminates sound transmission between the house and the garage
is only required on the ceiling to minimize heat loss
is a fire hazard
question 38
a landing may not be needed for exterior steps
when it is a secondary entrance and there are three or fewer risers
where there are three or fewer risers, regardless of which entrance it is
if the steps have a handrail that is at least 30 inches tall
where there are fewer than six steps
when the door opens inward

Explanation:

1. Combustible insulation in garages is flammable, so it poses a fire hazard. It does not reduce heating costs (as it's combustible and may be damaged), does not protect cars from rusting, does not eliminate sound - transmission, and is not just required on the ceiling for heat - loss minimization.
2. For exterior steps, a landing may not be needed when it is a secondary entrance and there are three or fewer risers. General building codes often have such provisions to ensure safety and practicality in construction.

Answer:

1. is a fire hazard
2. when it is a secondary entrance and there are three or fewer risers