Question

Which sentence is correctly punctuated?

O That's your book isn't it?
O That's your book, isnt it?
O Thats your book, isn't it?
O That's your book, isn't it?​

Answer 1

Which sentence is correctly punctuated?

O That's your book isn't it?

• there should have been a comma after your book.

O That's your book, isnt it?

• there should have been an apostrophe in between is and not i.e. isn't

O Thats your book, isn't it?

• should have had an apostrophe symbol after that before s in thats i.e. that's

O That's your book, isn't it? ✓

• this is the right answer as it's correctly punctuated,other lacks correct punctuations.

Answer 2

fourth option

Step-by-step explanation:

We can automatically eliminate the second and third options as "isn't" and "that's" are missing apostrophes.

When we say the sentence out loud, there is a pause between the book and isn't it, indicating that there would be a comma. I don't know the technical reason for the comma tho :(