Explanation
The demand workbench is a feature of ServiceNow Demand Management that allows you to view and assess business demands in a single place. You can use the demand workbench to compare demands with portfolios and see how they align with your strategic goals and objectives. You can also use the demand workbench to compare and prioritize demands against other demands based on their scores, risks, and benefits. You can find more information about the demand workbench in the Product Documentation for ServiceNow.

Explanation
According to the ServiceNow documentation1, the pm_home_page_config table is used to configure the parameters displayed on a project card on the My Projects Space page of the Project Workspace. The other tables are used for different purposes:
pm_project: Stores information about projects2.
pm_toplevel_project: Stores information about top-level projects3.
project_template_config: Stores information about project templates.

Explanation
According to the ServiceNow documentation1, a rate card is a table that defines the hourly cost of labor for different roles or resources. A project rate is a fixed rate that is applied to all resources assigned to a project, regardless of their roles or individual rates. Both of these can be used to calculate the planned cost of a resource plan by multiplying the hours allocated to each resource by the corresponding rate. The other options are incorrect because:
A: Demand rate: A demand rate is a rate that is applied to a demand, not a resource plan. It is used to estimate the cost of fulfilling a demand before it is converted into a project2.
C: Default rate: A default rate is a rate that is applied to a resource when no other rate is specified. It is not a valid option for calculating the planned cost of a resource plan, as it is only used as a fallback option3.
1:
https://docs.servicenow.com/bundle/vancouver-it-business-management/page/product/resource-management/con
https://docs.servicenow.com/bundle/vancouver-it-business-management/page/product/demand-management/conc
https://docs.servicenow.com/bundle/vancouver-it-business-management/page/product/resource-management/con

Explanation
According to the ServiceNow documentation1, a lens is a hierarchical structure that consists of entities and relationships. An entity is a data object that represents a business concept, such as a project, a demand, or a resource. A relationship is a link between two entities that defines how they are connected. A lens can have up to four levels of entities, each with a parent reference to the entity above it, except for the top-level entity, which has no parent reference. The top-level entity is the root of the lens and defines its scope and type. For example, a project lens has a project as the top-level entity, and a demand lens has a demand as the top-level entity.
1:
https://docs.servicenow.com/bundle/vancouver-it-business-management/page/product/it-business-management/c

Explanation
According to the ServiceNow documentation1, the planning console can show as many WBS levels as desired, starting from the level 1 to the lowest system components. The WBS levels can be expanded or collapsed by clicking the plus or minus icons next to the task names. The planning console also allows users to create, edit, and delete tasks, as well as add dependencies, assign resources, and track progress.
1:
https://docs.servicenow.com/bundle/vancouver-it-business-management/page/product/project-management/conc