Claiming a non-resident parent as a dependent

Hello,

I'd like to know if I can claim my mother as a dependent. Here are some information about the situation:

1. My mother is a US Green Card holder and has a SSN.

2. She lived in her own home (NOT in the US, Canada, or Mexico) for the entire 2023.

3. My mother is widowed.

4. I financially supported my mother during 2023. I paid more than half of all her expenses.

5. Other non-US based siblings (who live in the same country as my mother and are citizens of that country) also supported my mother (but less than half of her expenses in total). None of the siblings claim my mother as a dependent. I am the only one in who is a US citizen/resident and file US taxes.

5. My mother is a homemaker and has no income in the US or in her own country.

6. She has never filed US income taxes.

Based on the above information, can I claim my mother as a dependent? If yes, how do I answer the question about "Citizenship Status" under the TT page with title "Tell Us About Your Parent"? There are 3 choices in this pull-down box:

 - "US citizen or legal resident",

- "A resident of Canada or Mexico", or

- "Neither of the above".

Thank you!