Which sentence does not contain any punctuation errors? a. my sister sat down, opened the book, and read several pages to us. b. my sister sat down, opened the book and read several pages to us. c. my sister sat down, opened the book, and, read several pages to us. d. my sister sat down opened the book and read several pages to us.

- "about the claims : -

making a claim is just a fancy way of saying that you're stating your main point.' claims are not just opinions. a claim tells what you think is true about a topic based on your knowledge .

about the country claims : -

a counterclaim is just the opposite of a claim. counterclaims are also provable and supportable by reasons and evidence. not just, 'because i said so.' when you're planning an argument, you need to know what the counterclaim might be so that you can make sure that you disprove it with your reasons and evidence your research." - (catherineroberts)