You want to define multiple data disks as nested blocks inside the resource block for a virtual machine. What Terraform feature would help you define the blocks using the values in a variable?

Local values assign names to expressions for reuse but do not directly facilitate the dynamic creation of multiple nested blocks within a resource.

Dynamic blocks are specifically designed to generate multiple nested configuration blocks within a resource based on a complex type value, such as a list of objects from a variable, making them ideal for defining multiple data disks for a virtual machine.

The `count` argument creates multiple instances of an *entire resource block*, not multiple nested blocks within a single resource instance.

Collection functions like `for_each` or `map` help manipulate data structures, but the `dynamic` block is the specific language feature used to construct nested blocks based on those collections.