The correct answer is C. Account, Contact, Opportunity, according to the uploaded study guide.
The question tests the Salesforce data-model transition associated with converting a Lead. The study guide identifies the resulting business records as Account, Contact, and Opportunity.
Conceptually, each record represents a different part of the emerging customer relationship. The Account represents the customer or organization context, the Contact represents the individual person involved, and the Opportunity represents potential sales business being pursued.
Option A includes an Order. An Order represents a later transactional concept and is not one of the three records identified by the guide as the typical outcome of lead conversion.
Option B refers to a “Converted Lead” and Activity, but the guide does not identify those as the three resulting records in the standard lead-to-opportunity flow being tested.
For a UX Designer, understanding this record lifecycle matters because a user interface should align with what happens to users' data as they advance a sales process. Navigation, record context, and process guidance all depend on understanding how a Lead transitions into the customer and opportunity records sales users subsequently work with.
Study Guide reference/topics: Lead Conversion, Account, Contact, Opportunity, Sales process, Declarative Design.
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