The requirements point to a combination of a case management system and a conversational AI. Dynamics 365 Customer Service is the core application for managing support cases, tracking service-level agreements (SLAs) like first response and resolution times, and assigning priorities (Requirements 1 and 3). Power Virtual Agents provides the capability to build a no-code, chat-like interface (a chatbot) that can be integrated with Dynamics 365 to query and report on the status of cases, fulfilling the specific need for managers to check status with minimal manual searching (Requirement 2).

C. Power BI: This is a business analytics service for creating reports and dashboards. It visualizes data from other systems but does not manage the case lifecycle itself.

D. Dynamics 365 Customer Voice: This is an enterprise feedback management application used for creating and sending surveys to collect customer opinions, not for managing support cases.

1. Microsoft Docs (Dynamics 365 Customer Service): "Overview of case management in Dynamics 365 Customer Service". This document details the core capabilities of the application, including creating and managing cases, which are central to tracking support issues and their priorities.

2. Microsoft Learn (Dynamics 365 Customer Service): "Define service-level agreements (SLAs)". This section explains how SLAs are used in Dynamics 365 Customer Service to track key performance indicators (KPIs) such as first response time and resolution time for cases.

3. Microsoft Docs (Power Virtual Agents): "Power Virtual Agents overview". This document introduces Power Virtual Agents as a platform for creating chatbots that can answer questions posed by users, which directly addresses the requirement for a chat-like interface.

4. Microsoft Learn (Power Virtual Agents): "Use entities and slot filling in Power Virtual Agents bots". This module explains how bots can recognize and extract specific information from a user's query, such as a case number, to then retrieve relevant data from a system like Dynamics 365.