Correct Answer is (A) Quickstart: using the Google Cloud Console This page shows you how to perform basic tasks in Pub/Sub using the Google Cloud Console. Note: If you are new to Pub/Sub, we recommend that you start with the interactive tutorial. Before you begin Set up a Cloud Console project. Set up a project Click to: Create or select a project. Enable the Pub/Sub API for that project. You can view and manage these resources at any time in the Cloud Console. Install and initialize the Cloud SDK. Note: You can run the gcloud tool in the Cloud Console without installing the Cloud SDK. To run the gcloud tool in the Cloud Console, use Cloud Shell . https://cloud.google.com/pubsub/docs/quickstart-console

We need to enable the pub/sub API, if we are going to use it in your project... then APP engine can able to access it with required ServiceAccount

hello test

Yes A, is more correct as first you need to enable the API itself

ANSWER SHOULD BE A.

Answer A is correct. Enable the Cloud Pub/Sub API in the API Library on the GCP Console. Since the Cloud Pub/Sub API is currently disabled, the first step is to enable it. This can be done through the API Library on the GCP Console. Once the API is enabled, the service account can be used to authenticate the App Engine application to the Cloud Pub/Sub API. Answer B is incorrect because there is no automatic enablement of APIs when a service account accesses them. The API needs to be enabled manually in the API Library or through the command-line interface. Answer C is incorrect because enabling APIs through Deployment Manager requires that the APIs be enabled in the project before Deployment Manager can use them. Answer D is incorrect because granting the App Engine Default service account the Cloud Pub/Sub Admin role could be a security risk, and it is not necessary to enable the API.

A is right

Yup its A

go for A

Go for A

A is correct, although there are options to activate APIs programmatically (gcloud, curl) https://cloud.google.com/service-usage/docs/enable-disable B and C are incorrect because "rely on ..." is never a good option D could be possible, but to much permissions are given to the app

A is correct

Enable the Cloud Pub/Sub API in the API Library on the GCP Console.

This question seems to be asking "Can you automatically enable the API or do you have to do it manually?" and I think the answer is that there's no automatic enablement of the API.

A. Enable the Cloud Pub/Sub API in the API Library on the GCP Console.

A. Enable the Cloud Pub/Sub API in the API Library on the GCP Console.

A is correct