The solution that an app builder should use to meet this requirement is creating a custom report type with converted leads as the primary object. A custom report type is a template that defines the objects and fields that are available for a report. The app builder can create a custom report type that has converted leads as the primary object and includes fields from related objects, such as accounts, contacts, and opportunities. This way, sales reps can create reports on converted leads and see their related information. Option A is incorrect because enabling preserve lead status in the lead conversion settings does not affect the reporting on converted leads, but rather allows users to retain the original lead status after conversion. Option B is incorrect because assigning the representative view and edit converted leads permission does not affect the reporting on converted leads, but rather allows users to view and edit converted lead records. Option C is incorrect because ensuring the representative has read access to the original lead records does not affect the reporting on converted leads, but rather allows users to view the original lead records.

Partial Copy Sandboxes are ideal for testing and development purposes as they include a subset of production data and can be refreshed more frequently than Full Copy sandboxes. References:

Salesforce Help - Types of Sandboxes

To connect Testimonial__c records with both the submitter's Contact record and Account record, an app builder should create a master-detail relationship from Testimonial__c to Account and a lookup relationship from Testimonial__c to Contact. A master-detail relationship creates a parent-child relationship between two objects and allows for roll-up summary fields, sharing settings, and cascading actions. A lookup relationship creates a loose association between two objects and allows users to relate records from one object to another.Source

The solution that the app builder should configure to meet these requirements is creating three lead record types each with its own page layout containing the relevant fields. This way, the app builder can customize the fields and sections that appear on each record type based on the source of the lead. Option B is incorrect because creating a partner community and a record type for web and trade show leads does not address the requirement of collecting information that is unique to each type of lead, as partner community users may have different fields and layouts than internal users. Option C is incorrect because creating three sections on the lead layout and instructing users to collapse the non-relevant fields does not address the requirement of collecting information that is unique to each type of lead, as users may still see or enter data in the wrong fields. Option D is incorrect because creating custom page layouts for each type of lead only containing the relevant fields does not address the requirement of collecting information that is applicable to all sources, as users may miss some common fields.

Record-triggered flow is the automation tool that the app builder should use to best address all these requests of sending an email to the finance manager and creating a task for the sales manager when a new client is won. According to theSalesforce documentation, ''Record-triggered flows automate processes for you. They start when a record is created or updated, or when a platform event occurs.'' A record-triggered flow can perform actions such as sending an email alert or creating a record based on criteria or conditions. Screen flow, Apex, and Approval process are not automation tools that can handle all these requests.