Ravenstein’s laws of migration include several key principles, such as that migrants tend to move from rural to urban areas, that economic factors are a significant motivator for migration, and that young adults are more likely to migrate than other age groups.
Among the migration scenarios you provided, the one that BEST represents the principles of Ravenstein's law regarding international migration is:
A young man migrates from Mexico to Texas in search of economic opportunities.
This scenario aligns with Ravenstein's principles by highlighting the economic motivation for migration and the trend of younger adults seeking better opportunities in more developed regions.