Who is this girl (in the picture)?

[shikemoku]

Hello,

I want to know how to answer the question in the title.
Suppose the girl is my sister, how should I answer it in a sentence?

She is my sister.
The girl is my sister.
That's my sister.
It's my sister.

Are all OK? Which one would you use or something else?

Thank you in advance.

 

[Barb_D]

I'd say "That's my sister."

 

[shikemoku]

Could I ask one more question?
Is it safe to use the other answers?
Which one sounds the least natural to you?

 

[Rover_KE]

I expect you know that the shortest answer is 'My sister', but you did stipulate that you wanted it in a sentence.

Is it safe to use the other answers?

Yes, none of them will put you in any danger.;-)

 

[Tdol]

My sister would also work.

 

[shikemoku]

Thank you all for your help.
So it's OK to use "She is my sister," which I was not sure about.

Again, I really appreciate your help.

Shikemoku

 

[shikemoku]

Should I have used some other word instead of "safe"?:?:

 

[Tdol]

OK would work better and sound less alarming. ;-)

 

[Rover_KE]

Also 'acceptable'.

 

[shikemoku]

Thank you all again for your help.
It's difficult for me to tell how words I use would sound to native speakers.
Now I know I should use OK or acceptable in this case.

Thank you again for your replies.