Which of the following sentences contains an error in subject-verb agreement?

"dogs make wonderful pets because they us stay happy and healthy"the topic sentence is "dogs make wonderful pets" i need writing a sentence that is unrelated to the topic and can be eliminated.

What event in english history came to be known as the glorious revolution? a. the overthrow and execution of charles i by parliament b. the revolution led by oliver cromwell to rescue protestants in ireland c. the overthrow of james ii and the crowning of william iii and his wife, mary ii d. the return of charles ii and his crowning as the english monarch

Which is the corect way to site a quotation in the body of his paper using mla style