Explanation: Explanation
If you closely look at the options, you can start eliminating some of them.
We can easily eliminate "An Azure VNet with subnets and a virtual network gateway, and an OCI VCN with subnets and an attached service gateway" as we don't require service gateway to setup OCI-Azure Interconnect.
On similar lines, we can also eliminate the options where internet gateway and NAT gateway is pre-sent.
Hence "An Azure VNet with subnets and a virtual network gateway, and an OCI VCN with sub-nets and an attached internet gateway" and "An Azure VNet with subnets and a virtual network gateway, and an OCI VCN with subnets and an attached NAT gateway".
As you can see in the architecture below, on the OCI side you require a Dynamic Routing Gate-way and on the Azure side you need a Virtual Network Gateway.
Hence the option "An Azure VNet with subnets and a virtual network gateway, and an OCI VCN with subnets and an attached dynamic routing gateway" is CORRECT.
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