Explanation:
The correct answer is to create a new project and create an App Engine instance in europe-west3. This is because App Engine is a regional service, meaning the infrastructure that runs your app(s) is located in a specific region and cannot be changed once deployed. The other options are incorrect for the following reasons:
gcloud app region command does not support a set action; it only lists the availability of environments for each region.References:
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Users of your application are experiencing slow loading times. Upon investigation, you find that the App Engine deployment serving the application is located in us-central, while all users are closest to europe-west3. To minimize latency, you decide to change the App Engine application's region to europe-west3. What is the most effective method to change the App Engine region?
A
Contact Google Cloud Support and request the change.
B
Use the gcloud app region set command and specify the new region.
C
From the console, under the App Engine page, click edit, and change the region drop-down.
D
Create a new project and create an App Engine instance in europe-west3.