The correct answer is: B. Only argument II is strong
Argument I is not a strong argument because it does not provide a valid reason for why refugees should be forced to go back to their homeland. The fact that refugees may make colonies and occupy a lot of land does not necessarily mean that they should be forced to leave. There are many other factors that should be considered, such as the reasons why the refugees left their homeland in the first place, the conditions in their homeland, and the availability of resources in the country they are seeking refuge in.
Argument II is a strong argument because it provides a valid reason for why refugees should not be forced to go back to their homeland. Refugees often leave their homes because of hunger or terror, and they should not be forced to return to dangerous or unstable conditions. Additionally, refugees often have strong ties to their new communities, and forcing them to leave would be disruptive and harmful.
Therefore, only argument II is a strong argument.