To enable Calm, the administrator needs to log on to Prism Central with a local ADMIN account and click Services -> Calm -> Enable. This will install the Calm service on Prism Central and allow the administrator to access the Calm UI and features. The other options are incorrect because they either refer to Prism Element, which is not the correct platform for Calm, or they involve unnecessary or incorrect steps. References:
[Enabling and Accessing Calm | Nutanix Community]
(https://next.nutanix.com/installation-configuration-23/enabling-and-accessing-calm-40191); [Nutanix Certified Professional - Multicloud Automation (NCP-MCA) Exam Blueprint Guide] (https://www.nutanix.com/content/dam/nutanix/resources/support/ds-ncp-mca.pdf), section 2.1.