Q.
Choose the words that best fit the meaning of the sentence as a whole.
A new start-up has found an _____ way of recycling household waste and making people contribute that sum to _____ non-governmental organisations.
The first blank is preceded by ‘an’, which means that the first filler must have a vowel sound. This leaves us with options A and D. Both these options have first fillers grammatically as well as contextually suitable for the statement but option D takes an upper hand because ‘unrecognizable’ in option A is incorrect for the second filler; it fails to give any meaning to the statement.