Improvements can be made to buildings and towns to help contain fires. Houses should have sprinklers, steel frames, strong glass, and fire- resistant roofs. In addition, residents must avoid having vegetation near their homes, because sparks can fly between trees or shrubs and houses. Towns and counties must build firebreaks, whether those are roads or just wide strips of bare land. They must make sure that there are good emergency routes for evacuations.

Which price of evidence would strengthen the argument that improvements can be made?
Options:
Residents need to be sensible and vigilant.
After all, no
Matter what the building codes are, fire will still happen
These practices can be relatively inexpensive to perform
People must decide whether to rebuild their homes after a fire

The option that would strengthen the argument that improvements can be made is "These practices can be relatively inexpensive to perform." This evidence suggests that implementing the suggested improvements to buildings and towns to contain fires would not be cost-prohibitive, making them more feasible and practical.