Critical Reading > Sentence Completions

Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

The jellyfish’s slow pulsing action propels it in a graceful, seemingly ------- drift, but its tentacles contain a poison potent enough to stun a swimming human.

(A) sinister
(B) rhythmic
(C) murky
(D) harmless
(E) patient 

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The Correct answer is D.

Explanation

The jellyfish is presented as seeming the opposite of harmful. Only “harmless” fits the logic required by “but.”