Option B is the correct choice because it accurately follows the necessary sequence of steps for deploying an application in a new GCP project. Initially, it involves creating a new project using the Cloud SDK, followed by enabling the Compute Engine API within that project, and finally creating the Compute Engine instance in the specified project. This sequence ensures that all prerequisites are met before the instance is created. Options A, C, and D either miss the step of creating a new project first or incorrectly sequence the steps, leading to potential deployment issues. For more detailed guidance, refer to the Google Cloud documentation.