[B], developing the art style guide and production plan.
It wouldn't be [A], because patches are released to consumers of the game, to fix bugs and add new content, which won't be done until post-production.
It wouldn't be [C] either, as it is also post-production, because you are sending the game to produced, packaged and shipped, meaning the game has already been pretty much fully developed.
Answer:
How did technology affect the growth of cities and housing within them? ... Advances in technology and greater business efficiency and productivity further expanded the variety of goods and services within their reach. The growing middle class also supported an expansion of higher education.
Explanation: