Final answer:
Modular homes are built in factories, have standardized design processes, and must meet the same building codes as traditional homes, often making them less expensive.
Step-by-step explanation:
All statements regarding modular homes are true except that their construction standards differ from stick-built homes. Modular homes are indeed largely built in factories (A) and involve standardized design processes (B), providing consistent quality and reducing human error with the help of computer-aided machines and robotics.
These homes are typically constructed to meet or exceed the same building codes as traditional site-built homes, meaning that the correct answer is (C). Furthermore, due to efficiencies in the production process, modular homes are often less expensive (D) than traditionally constructed homes. This efficiency has become increasingly important as over half of the world's population now resides in urban areas, necessitating cost-effective and contextually relevant housing solutions.