Form Recognizer is designed to extract text, key-value pairs, and table data from forms and documents. Option A, 'Extracting the invoice number from an invoice,' and option D, 'Determining the retailer from a receipt,' are both tasks that involve extraction of specific information from structured documents, which is what Form Recognizer excels at. Option B, 'Translating a form from French to English,' pertains to translation services, and Option C, 'Locating an image of a product in a catalog,' involves image recognition, neither of which are primary functions of Form Recognizer.