Migrate all virtual machines into Compute Engine.

Answer: C

Explanation:

The framework illustrated in the preceding diagram has four phases:

• Assess. In this phase, you assess your source environment, assess the workloads that you want to migrate to Google Cloud, and assess which VMs support each workload.

• Plan. In this phase, you create the basic infrastructure for Migrate for Compute Engine, such as provisioning the resource hierarchy and setting up network access.

• Deploy. In this phase, you migrate the VMs from the source environment to Compute Engine.

• Optimize. In this phase, you begin to take advantage of the cloud technologies and capabilities.

Reference: https://cloud.google.com/architecture/migrating-vms-migrate-for-compute-engine-getting-started