English Grammar - Sentence Completion

English Grammar
English Grammar - Sentence Completion

Select the correct option: The professor's remarks were so dense with jargon that they bordered on ___.


Options:

  1. opacity
  2. opaque
  3. opacus
  4. opalescent

Right Answer: opacity

The blank follows the preposition 'on' in the phrase 'bordered on', which must be completed by a noun. 'Opacity' is the noun form, meaning the quality of being difficult to understand or see through, and it fits the idea of remarks so dense with jargon that they become impenetrable. 'Opaque' is an adjective and cannot follow a preposition in this structure. 'Opacus' is Latin rather than standard English usage. 'Opalescent' is an adjective describing a milky, shimmering play of colour, which concerns appearance rather than incomprehensibility. Hence option one is correct.

This question is part of English Grammar - Sentence Completion, which has 14 practice questions with answers.

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