1. Salesforce Help, Consumer Goods Cloud, "Create Action Plan Templates for Visits": This document outlines the process of creating a template. It explicitly states, "To make the template available for users, click Activate." This directly refutes option C. It also implicitly supports option B by describing the addition of a "list of common tasks" without specifying a limit of one per type.
2. Salesforce Help, Consumer Goods Cloud, "Set Up Assessment Task Definitions for Action Plan Templates": This guide details how to create the underlying definitions for tasks like inventory and planogram checks. It shows that you can create multiple, distinct definitions (e.g., "Inventory Check for Snacks," "Inventory Check for Beverages") which can then all be added to a single Action Plan Template. This directly supports the correctness of option B.
3. Salesforce Object Reference Guide, "ActionPlanTemplate": This developer documentation confirms that ActionPlanTemplate is a standard Salesforce object. As such, it supports DML operations, SOQL queries, and can be used in Apex triggers and classes, which invalidates the claim in option D.