The correct answer is (D) To manufacture sections (beforehand). To construct standardized sections (e.g., of a house) in advance for subsequent shipment and easy assembly. To fabricate standardized component parts in a factory for later assembly on a site.

Prefabricate comes from Latin frabrica (to craft).

Examples of use:

• The building had been prefabricated.
• They prefabricate the window and door frame units.