Final answer:
To become a U.S. citizen, Thalina must meet specific criteria, including being at least 18 years old, a lawful permanent resident for at least five years, and being able to speak English.
Step-by-step explanation:
To become a U.S. citizen, Thalina would need to go through the naturalization process. First, she must be at least 18 years old and a lawful permanent resident (green card holder) for at least five years. Additionally, she must have been physically present in the United States for at least 30 months, be a person of good moral character, and be able to speak, read, write, and understand the English language.