Let's go with option elimination
A. Create a VPC and connect it to your on-premises data centre using Dedicated Interconnect.
>> Is the only remaining best option after elimination. As per the document, its partner interconnects with VPN. Interconnect is between GCP and on-prem. URL1
B. Create a VPC and connect it to your on-premises data centre using a single Cloud VPN.
>> max 3 gigabits per second (Gbps) eliminate the option.
C. Create a Cloud Content Delivery Network (Cloud CDN) and connect it to your on-premises data centre using Dedicated Interconnect.
>> CDN is for egress traffic or static content hosting hence eliminate the option URL2
D. Create a Cloud Content Delivery Network (Cloud CDN) and connect it to your on-premises datacenter using a single Cloud VPN.
>> CDN is for egress traffic or static content hosting hence eliminate the option URL2
Hence A is correct answer.
URL1 https://cloud.google.com/network-connectivity/docs/interconnect/concepts/overview
URL2 https://cloud.google.com/network-connectivity/docs/cdn-interconnect