Final answer:
The correct Azure support plan to purchase for 24x7 technical phone support is the Professional Direct plan.
Step-by-step explanation:
The correct Azure support plan to purchase in order to get 24x7 technical phone support is the Professional Direct plan. The Professional Direct plan provides round-the-clock access to Microsoft’s technical experts through phone calls, chat, and web support.
This plan is specifically designed for customers who require immediate and direct access to Microsoft engineers for critical issues or emergencies.