Final answer:
Workstation1 will use the destination MAC address provided in the ARP response.
Step-by-step explanation:
When a workstation sends an IP packet to another device on the network, it needs to determine the destination MAC address. In this case, Workstation1 is sending a packet to Workstation3.
To find the destination MAC address, Workstation1 will look in its ARP cache, which is a table that maps IP addresses to MAC addresses. If the destination IP address is not in the ARP cache, Workstation1 will send an ARP request broadcast to ask for the MAC address associated with the destination IP address.
Once it receives a response, Workstation1 will use the destination MAC address provided in the response.