Correct Answer: Only I follows

Solution : Given:
Statement: There is a large increase in the migration of villagers to urban areas as repeated crop failure has put them into financial problems.

Let's analyse the courses of action –
I. The villagers should be provided with an alternate source of income in their villages which will make them stay there only – Yes, the villagers should be provided with an alternative source of income in their villages as crop production is weather-dependent. This would prevent migration to urban areas.
II. To ensure their survival, the migrated villagers should be given access to all housing options in urban areas – The villagers are migrating to urban areas by their own choice. Therefore, it is not the government's responsibility to ensure their survival.

So, only the first course of action follows. Hence, the fourth option is correct.