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Difficulty: Very hardPrepositions and Prepositional Phrases

Despite receiving multiple formal warnings from financial auditors regarding serious budget irregularities, the managing director remained completely impervious _____ all constructive advice. Which preposition correctly completes the sentence?

  1. toAnswer
  2. B
    from
  3. C
    against
  4. D
    with

Answer

The correct preposition to complete the sentence is 'to'.
The adjective 'impervious' (meaning unable to be affected or influenced) strictly requires the dependent preposition 'to'. Therefore, 'impervious to' is the only syntactically and idiomatically correct option.

Step-by-Step Solution

1
Identify the head predicate adjective governing the prepositional complement.
The target adjective is 'impervious'.
The sentence structure requires an adjectival complement denoting resistance to external influence.
2
Determine the mandatory dependent preposition associated with 'impervious'.
'Impervious' collocates exclusively with 'to'.
Standard English syntax mandates that 'impervious' takes the preposition 'to' (e.g., 'impervious to criticism', 'impervious to moisture').

Key Concept

Dependent Prepositions with Adjectives
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Topics

Prepositions and Prepositional Phrases

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