Correct Answer: A
Option A is correct. Compute Engine virtual machines are Zonal resources, and customers can manage redundancy across zones or regions on their own if required.
Option B is incorrect. Cloud Storage is a Multiregional resource.
Option C is incorrect. Datastore is a Multiregional resource.
Option D is incorrect. Firestore is a Multiregional resource.
https://cloud.google.com/compute
https://cloud.google.com/storage
https://cloud.google.com/datastore
https://cloud.google.com/firestore