Which person is demonstrating an attempt to assimilate in the dominant culture of United States?

A person who is learning English, watching American movies, and participating in American sports is demonstrating an attempt to assimilate in the dominant culture of the United States. These actions show that the person is making an effort to adopt the language, habits, and activities that are common in American society. Assimilation is the process by which immigrants and their descendants adopt the cultural traits of the country they have moved to. This can include adopting the language, customs, values, and beliefs of the new country. In the case of the person described in the question, learning English, watching American movies, and participating in American sports are all ways in which that person is trying to fit in and become more like the people around them.