Refer to the exhibit. Router R1 peers with two ISPs using static routes to get to the internet. The requirement is that R1 must prefer ISP-A under normal circumstances and failover to ISP-B if the connectivity to ISP-A is lost. The engineer observes that R1 is load balancing traffic across the two ISPs. Which action resolves the issue by sending traffic to ISP-A only with failover to ISP-B?

Correct Answer: B
https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/floating-static-route If we want to use a static route as a backup route, we'll have to change its administrative distance. This is called a floating static route.
https://www.geeksforgeeks.org/what-is-floating-static-route/
higher admin value to make a secondary route:
Router(config)#ip route 192.168.60.0 255.255.255.0 192.168.40.2 (primary route) Router(config)#ip route 192.168.60.0 255.255.255.0 192.168.20.2 10 (secondary route)