You are driving on a rural road and see a person on the shoulder ahead, riding or leading an animal. you should

Plz some scientists gaze into outer space to look for answers. some scientists seek answers in the depths of the sea. when georg steinhauser wanted answers, he looked within himself. well, he looked within his bellybutton to be exact. the austrian chemist spent three years researching the contents of his navel and the navels of others. he has solved one of life's greatest mysteries. we now know exactly what bellybutton lint contains! steinhauser presented his findings in the online version of the journal medical hypotheses. the vienna university scientist analyzed over 500 samples to determine the exact makeup of the lint. as suspected, most of the lint was made up of cotton from clothing. the fabric pieces are not alone, though. steinhauser found that the average bellybutton also contained pieces of dead skin, sweat, dust, and fat. steinhauser's notes also explained how lint accumulates. stomach hairs tend to grow in a circular pattern around the bellybutton. the hairs act like small hooks, capturing and holding contents within. shaving stomach hair can lead to a lint-free bellybutton, but don't act too hastily. although the contents of your navel may be a nuisance, research suggests that lint has a purpose. it is nature's way of protecting your bellybutton from germs and unwanted objects.

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read this excerpt from president john f. kennedy’s inaugural address on january 20, 1961: in the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. i do not shrink from this responsibility—i welcome it. i do not believe that any of us would exchange places with any other people or any other generation. the energy, the faith, the devotion which we bring to this endeavor will light our country and all who serve it—and the glow from that fire can truly light the world. and so, my fellow americans: ask not what your country can do for you—ask what you can do for your country. my fellow citizens of the world: ask not what america will do for you, but what together we can do for the freedom of man. based on the excerpt, what is the central idea of this speech? a. to cultivate a sense of well-being among the american people b. to motivate people everywhere to uphold the freedom of humankind c. to motivate americans to strive for the development of their nation d. to foster a feeling of happiness and unity across people and nations