A small startup company has set up its initial office network using a hub to connect all employee computers. As the company grows, the network administrator notices an increase in network collisions and a decrease in overall network performance, especially during peak hours. The administrator is considering network infrastructure upgrades to address these issues.

Which of the following actions would most effectively reduce network collisions and improve performance in the company's network?

Add another hub to distribute the network load.

Implement a wireless access point in place of the hub.

Increase the length of Ethernet cables to reduce signal strength.

Replace the hub with a switch.