WHich of the following function falls under Identify?

Question $9$ options:

Create an inventory of physical assets $($devices and systems$)$ within the substation $($NIST ID$.$AM$-1).$

Describe in general how you might go about protecting the physical assets identified in the previous point $($NIST PR$.$AC$-2).$

How would you need to respond to the anomalies and events you've identified through the devices, systems, and steps you would implement in the previous point $($NIST RS$.$AN$-1,2,3)?$

Which steps could be put in place to recover from actions intended to access, disable, degrade, or destroy the assets you previously identified $($NIST RC$.$RP$-1)?$