What is the central idea of black beards ghost the newsela article

If the author's last name is mentioned in the sentence, it does not need to be included in the in-text citation.

When you wear your earbuds while working out, your sweat damages them and they die sooner

Which phrase from the article suggests a tone that is formal but subjective? a- "thirty-six inches long and sixteen inches wide" b- "loads of fun with it" c- "most generous and attractive" d- "must be new subscribers"