Respuesta :
3: prove his point by spelling out the options available with an education.
Obama talks about different professions in the speech, they aren't just limited to science or writing. This eliminates Options 1 and 2 as possibilities. Also he is not saying that you should take specific classes, but rather you should try and do your best in every class, because you never know which class may provide you with inspiration or the skills you need later in life.
The purpose of the parallel structure is to help Obama to make his statement by illuminating the choices accessible with schooling.
What was context of Obama in speech?
Obama discusses various callings in the discourse, they aren't simply restricted to science or composing. This takes out Options as conceivable outcomes.
Likewise he isn't saying that you ought to take explicit classes, yet rather you ought to attempt to give your all in each class, since no one can tell which class might furnish you with motivation or the abilities you really want sometime down the road.
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