Final answer:
The first step a new OCI admin needs to take to deploy infrastructure in a new region is to request access to that region. Afterwards, they can create a Virtual Cloud Network there and start operations.
Step-by-step explanation:
When an admin logs into Oracle Cloud Infrastructure (OCI) for the first time and wants to deploy infrastructure in a new region, the first step they need to take is to 'd) Request access to the desired region'. After they request and receive access to the required region, they can proceed to create a Virtual Cloud Network (VCN) in that region and begin their operations. Take note that changes to the Tenancy ID or submitting a support request to Oracle are not necessary initial steps in this process.
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