Answer:
I believe it is the 3rd one as you wouldn't use point to define numbers last one you would use a colon and second one you would say a hundred days
The correct sentence is "This is my 1st time going roller skating."
The sentence "This is my 1st time going roller skating" shows the numerical expression correctly, which makes the text coherent and structurally harmonic.
Learn more about expressing numerals at the link:
https://brainly.com/question/17055688
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