Identify the correct transitional adverb to show concession: 'The algorithm showed high theoretical efficiency; _______, practical implementation proved challenging due to memory bottlenecks.'
Answer and explanation
Correct answer: D. nevertheless
- Step 1: The sentence contrasts high theoretical promise with practical implementation difficulty, requiring an adversative or concessive transitional adverb.
- Step 2: 'Nevertheless' indicates contrast and concession between two related independent clauses.
Answer
nevertheless.
Why not the others: 'furthermore' indicates additive support; 'consequently' indicates a cause-and-effect logical outcome; 'similarly' indicates comparison and resemblance.
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