In the modern Salesforce Lightning experience, the Learning Path is the best tool for an admin or consultant to deliver targeted training directly within the flow of work.

What is a Learning Path?

A Learning Path allows a consultant to curate specific Trailhead modules, internal documents, or videos and assign them to specific users or groups based on the page they are currently viewing. For a nonprofit implementing NPSP, the consultant can:

Curate Content: Select existing Trailhead modules like 'Fundraising with Nonprofit Success Pack.'

Assign to Users: Target the training specifically to the 'Fundraising' profile or 'Gift Officer' team.

In-App Access: Instead of forcing staff to leave Salesforce to search a separate help portal, the training appears in the 'Learning' side panel (represented by the graduation cap icon) while they are actually looking at Opportunity or Contact records.

Track Progress: Managers can see who has completed the assigned modules, making it a powerful tool for onboarding and change management.

Why other options are incorrect:

Salesforce Help and Training (Option A): This is the documentation portal. While useful, it is a 'pull' resource (staff have to go find it) rather than a 'push' resource (assigned by the admin).

Trailblazer Community (Option C): This is a forum for discussion and peer support, not a structured training assignment platform.

AppExchange Report (Option D): The AppExchange is for downloading apps; there is no such thing as an 'AppExchange Report' used for assigning training.