What is a central idea? I need just a general idea of it. Thank you in advance if anyone answers my question!

Read the passage: canines may not be the deepest thinkers in the world. but perhaps that's for the best. the life of a dog—sitting alone all day, waiting for everyone to come home—can be pretty boring. super-smart animals would probably get totally stressed out, says university of pennsylvania researcher james serpell. look at it this way: if dogs were any smarter, they probably wouldn't choose to hang around with us. which best describes the tone of the passage?

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites

Which of these excerpts from margaret frink's memoir makes heaviest use ofimagery? oa. the bottom was divided off into little compartments orcupboards. after putting in our provisions, and other baggage, afloor was constructed over all, on which our mattress was laid. ffob. the wagon was packed and we were all ready to start on thetwenty-seventh day of march. he. ww. as born and raised in thweslelend& rnewyork. i, margaret ann alsip, his wife, was born in maryland, thoughpartly raised in virginia, on the banks of the potomac river. inod. we situated ourselves one hundred and twenty-five miles fromcheviot, in the town of martinsville, the county seat of morgancounty, indiana. w