Answer:
Reorganize the network into smaller groups and connect each group to a router.
Explanation:
The user presently has 15 switches linked to another switch, with such an avg of 20 locations. The switches are linked to each other in such a manner that almost all systems can convey within a single Local area network. The high percentage to broadcast frames were found on that Local area network. They believe the amount of broadcasts could affect throughput.
So, they would reorganize each network into smaller units and link to such a router for each unit.