Which Amazon EC2 instance purchasing option must the company use for this license type?

Explanations:

Reserved Instances allow users to reserve capacity for a specific instance type in a specific region for a term of one or three years but do not provide the physical server required for per-core software licenses.

Dedicated Hosts provide a physical server that is dedicated to the customer, allowing them to use their per-core software licenses. This option ensures compliance with license agreements by allocating a specific number of cores.

Spot Instances are spare EC2 capacity available at reduced rates and do not guarantee a dedicated physical server, making them unsuitable for per-core software licensing.

Dedicated Instances run on physical servers that are dedicated to a single customer but do not provide the same level of control over the physical host as Dedicated Hosts, which is necessary for per-core licensing compliance.