Which line from whitman’s "o captain! my captain! " appeals to the audience's emotions in a similar way? the ship has weather'd every rack, the prize we sought is won; while follow eyes the steady keel, the vessel grim and daring: my father does not feel my arm, he has no pulse nor will; o captain! my captain! our fearful trip is done;

the correct answer is   o captain! my captain! our fearful trip is done.

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the correct answer is option d. none of these. it is noted that options a, b, and c share the same content.

despite the valid answer provided at the last sentence of each of the options, a question/answer format shouldn't include humourous themed responses such as "you bet your thermal pj's we do." - unless of course, the answer is carried out in an informal environment. this could be replaced with a simple "yes" or "it is necessary".

the question should be re-phrased to a more appropiate syntaxis. instead of "do we need the greenhouse effect? ", it should be written as "is the greenhouse effect necessary? " in order to give it a general scope, instead of limiting the answer to the needs of "we" the humans.