The correct answer is: A) Slums in urban areas.
Migration can lead to an increase in the population of slums in urban areas. This is because migrants often move to cities in search of better opportunities, but they may not have the skills or education necessary to find good jobs. As a result, they may end up living in slums, which are overcrowded and unsanitary areas with poor infrastructure.
Option B, source villages (where migrants leave from), is incorrect because migration can also lead to a decrease in the population of source villages. This is because migrants often leave their villages in search of better opportunities elsewhere. As a result, the population of source villages may decline.
Option C, remote areas, is incorrect because migration is more likely to occur from rural areas to urban areas. This is because there are more opportunities in urban areas than in rural areas. As a result, the population of remote areas is less likely to increase due to migration.
Option D, industrial zones, is incorrect because migration is more likely to occur to areas with a high concentration of jobs. Industrial zones are not always located in areas with a high concentration of jobs. As a result, the population of industrial zones is less likely to increase due to migration.