Final answer:
The answer to the question is A) Economic. Economic barriers such as high travel and setup costs are significant hindrances to migration, especially affecting individuals with fewer resources.
Step-by-step explanation:
The costs of travel and establishing a new home can be significant economic barriers to migration, especially for the poor. The correct answer is A) Economic. Migration can be influenced by a variety of factors, including economic, social, legal, and environmental concerns. In many instances, it is the economic constraints such as the high costs associated with mobility and the establishment of a new household that pose as significant barriers, particularly affecting individuals with fewer financial resources. These economic challenges can include expenses related to transport, rent, utilities, and the basic costs of setting up a home in a new area.