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The correct answer is A. AppExchange.

For a Salesforce Classic-to-Lightning Experience migration, the app builder should look for prebuilt apps, components, adoption tools, and consultant solutions on AppExchange. Salesforce now refers to this marketplace as AgentExchange in newer Trailhead content, but the exam op tion “AppExchange” is still the intended answer. Salesforce describes it as the marketplace for Salesforce solutions, including apps, agents, components, and more, and specifically notes that admins can look there instead of building everything from scratch.

Flow Builder is for automation, Lightning Object Creator is for creating objects from spreadsheets, and Import Wizard is for importing data. They are not marketplaces for prebuilt adoption or migration resources.

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