Answer:
The answer is "Option a".
Explanation:
In cloud computing, it is also known as the model, that enables you for accessible, convenient, through the-demand network access to global computer resources, which can be rapid to get and published via low administrative effort.
Its recommending selection for the cloud providers support for the robust encryption, that has adequate replication processes in place, use user authentication, or provide ample clarity to customers regarding mechanisms that defend subscriptions against other subscriptions and the supplier.