(PUCRS) - QUESTÃO

The alternative which contains the prepositions that best complete the sentences below is:

Prepaid meters have been launched with the aim __________ improving water service; however, they might be a problem __________ those who cannot afford paying __________ water services.

Ⓐ to – for – of

Ⓑ on – to – for

Ⓒ of – to – on

Ⓓ for – on – of

Ⓔ of – for – for

Let's analyze the sentence and test each preposition to find the grammatically correct and most natural option in context.

Sentence:

Prepaid meters have been launched with the aim __________ improving water service; however, they might be a problem __________ those who cannot afford paying __________ water services.

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First blank:

"With the aim _____ improving water service"

The correct preposition after "with the aim" is "of":

• - "with the aim of improving" (This is the standard collocation.)

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Second blank:

"a problem __________ those who cannot afford"

The correct preposition is "for":

• - "a problem for those who cannot afford..."
  This indicates the people affected by the problem.

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Third blank:

"paying __________ water services"

The correct preposition is "for":

• - "paying for water services"
  We always pay for something.

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Correct sentence:

Prepaid meters have been launched with the aim of improving water service; however, they might be a problem for those who cannot afford paying for water services.

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- Correct alternative: of – for – for