The correct answer is B, which includes Subnets and Internet Gateways. Subnets are logical subdivisions of an Amazon VPC's IP address range that allow you to isolate and organize your AWS resources within the VPC. Internet Gateways are used to connect your VPC to the internet, enabling communication between your VPC resources and external networks. The other options are incorrect because: A) Objects and ACLs are not specific to Amazon VPC; C) Access policies and buckets are related to Amazon S3, not VPC; and D) Groups and roles are related to AWS IAM, which is a service for managing access to AWS resources, but they are not specific VPC resources.