The steps that the app builder should take to meet these requirements are creating a Partial Copy Sandbox and using a sandbox template. A Partial Copy Sandbox can include data records, exclude confidential objects, and be refreshed weekly. A sandbox template can specify which objects and data are copied from the production org to the sandbox org. Option A is incorrect because creating a Full Sandbox and using a sandbox template is not necessary for this requirement, as Full Sandboxes copy all data and metadata from the production org and can only be refreshed every 29 days. Option B is incorrect because creating a Developer Pro Sandbox and scheduling Data Loader to download selected object data weekly is not feasible for this requirement, as Developer Pro Sandboxes do not include data records by default and Data Loader cannot be scheduled to run weekly. Option D is incorrect because creating a Developer Sandbox and scheduling Data Loader to download selected object data weekly is not feasible for this requirement, as Developer Sandboxes do not include data records by default and Data Loader cannot be scheduled to run weekly.