Explanation
You can add more than one outbound route to the contact center is a true statement. You can add multiple outbound routes to the contact center in Genesys Cloud CX Telephony Admin menu based on your needs and preferences. You can add different outbound routes for different classifications of destination numbers, such as local, long distance, international, etc. You can also add different outbound routes for different trunks or numbering plans that you want to use for outgoing calls. You can also add different outbound routes for different priorities or failover scenarios that you want to implement for outgoing calls. References:
https://help.mypurecloud.com/articles/add-an-outbound-route/
https://help.mypurecloud.com/articles/outbound-routes-overview/

Explanation
SIP proxy is the Edge feature that contains the built-in remote survivability mode. Remote survivability mode is a feature that allows the Edge to continue to provide core telephony services even when it loses connection with Genesys Cloud CX. The SIP proxy service on the Edge detects the loss of connection and switches to remote survivability mode. In this mode, the Edge can still route calls to and from phones, SIP trunks, and telephony gateways based on the last known configuration from Genesys Cloud CX. References:
https://help.mypurecloud.com/articles/edge-device-overview/
https://help.mypurecloud.com/articles/edge-remote-survivability-faqs/

Explanation
Automatic Call Distribution (ACD) is the feature that routes interactions based on an algorithm that determines the best available agent for the interaction. ACD is a system that distributes incoming calls (or other types of interactions) to agents or queues based on various criteria, such as agent skills, availability, priority, etc. ACD uses an algorithm that evaluates these criteria and assigns each interaction to the most appropriate agent or queue. References:
https://help.mypurecloud.com/glossary/automatic-call-distribution-acd/
https://help.mypurecloud.com/articles/about-acd/