Based on the options provided, the best assessment of how migration to cities affected rural areas is:
Industrialization made rural areas more accessible to people wanting to relocate.
This response captures the idea that as cities grew and industrialized, infrastructure improvements (such as transportation) also made rural areas more reachable for people considering a move, either to seek opportunities or to take advantage of available resources. The other options do not accurately reflect the typical relationship between urbanization and rural areas.