Answer :
Final answer:
Flashing is required at the brick to prevent water penetration at the intersection of a roof and a vertical brick wall. so the correct option is (a) Flashing.
Explanation:
When a roof abuts next to a vertical brick wall, flashing is required at the brick to prevent water penetration.
Flashing is a thin, impervious material, typically made of metal, that is installed at joints or transitions in a building to prevent water from entering.
In this case, flashing would be installed at the intersection of the roof and the brick wall to direct water away from the joint and prevent it from seeping into the building.
