Explanation:

A basic support plan provides:
* 24x7 access to billing and subscription support, online self-help, documentation, whitepapers, and support forums
* Best practices: Access to full set of Azure Advisor recommendations
* Health Status and Notifications: Access to personalized Service Health Dashboard & Health API References:
https://azure.microsoft.com/en-us/support/plans/

Explanation:

Box 1: No
Box 2: No
Each resource can exist in only one resource group.
Box 3: Yes
Resources from multiple different regions can be placed in a resource group. The resource group only contains metadata about the resources it contains.
Reference:
https://docs.microsoft .com/en-us/azure/azure-resourc e-manager/resource-group-overview
https://www.codeisahighway.com/effective-wa ys-to-delete-resources-in-a-resourc e-group-on-azure/

Explanation:

Box 1: Yes
You can assign additional account administrators in the Azure Portal.
Box 2: No
You need an Azure Active Directory account to manage a subscription, not a Microsoft account.
An account is created in the Azure Active Directory when you create the subscription. Further accounts can be created in the Azure Active Directory to manage the subscription.
Box 3: No
Resource groups are logical containers for Azure resources. However, resource groups do not contain subscriptions. Subscriptions contain resource groups.
References:
https://docs.microsoft.com/en-us/office365/enterprise/subscriptions-licenses-accounts-and-tenants-for- microsoft-cloud-offerings

Fault tolerance is the ability of a system to continue to function in the event of a failure of some of its components.
In this question, you could have servers that are replicated across datacenters.
Availability zones expand the level of control you have to maintain the availability of the applications and data on your VMs. Availability Zones are unique physical locations within an Azure region. Each zone is made up of one or more datacenters equipped with independent power, cooling, and networking. To ensure resiliency, there are a minimum of three separate zones in all enabled regions. The physical separation of Availability Zones within a region protects applications and data from datacenter failures.
With Availability Zones, Azure offers industry best 99.99% VM uptime SLA. By architecting your solutions to use replicated VMs in zones, you can protect your applications and data from the loss of a datacenter. If one zone is compromised, then replicated apps and data are instantly available in another zone.
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/manage-availability