Read the passage from president barack obama's back-to-school remarks.

and that’s what i want to focus on today: the responsibility each of you has for your education. i want to start with the responsibility you have to yourself.

every single one of you has something you’re good at. every single one of you has something to offer. and you have a responsibility to yourself to discover what that is. that’s the opportunity an education can provide.

the repetition of responsibility in the passage obama achieve his purpose by

a. providing evidence to support his speech.
b. emphasizing the main idea of the speech.
c. showcasing his expertise at writing a speech.
d. soothing the audience with the rhythm of the speech.

What type of writing is demonstrated in this excerpt by general philip henry sheridan? at once i set about preparing for the examination which precedes admission to the military academy, studying zealously under the direction of mr. william clark; my old teachers, mcnanly and thorn, having disappeared from somerset and sought new fields of usefulness. the intervening months passed rapidly away, and i fear that i did not make much progress, yet i thought i should be able to pass the preliminary examination. that which was to follow worried me more and gave me many sleepless nights; but these would have been less in number, i fully believe, had it not been for one specification of my, outfit which the circular that accompanied my appointment demanded. this requirement was a pair of "monroe shoes." now, out in ohio, what "monroe shoes" were was a mystery—not a shoemaker in my section having so much as an inkling of the construction of the perplexing things, until finally my eldest brother brought an idea of them from baltimore, when it was found that they were a familiar pattern under another name. a. research essay b. persuasive essay c. biography d. memoir