The correct answer is B) a citizen’s loyalty to his or her government.
What BEST defines the meaning of the underlined word in the sentence below is a citizen’s loyalty to his or her government
The statement is "A citizen owes allegiance in exchange for certain rights." The underlined word is "allegiance."
This statement is found when referring to the United States Flag Code. Everybody is familiar with the phrase "I pledge allegiance to the flag of the United States and to the Republic for which stands..."
This means that any US citizen must respect and be loyal to the principles and rules of the United States, and is willing to accept its rights and obligations as an American citizen.