To choose the correct sentence, ensure proper use of possessive pronouns and objective case pronouns.
The correct sentence is C: 'Every client's needs are of the utmost importance to us; we'll do all that's necessary to fulfil their requirements.'
In this sentence, 'client's' shows possession, 'needs' is the plural noun, 'their' is the possessive pronoun, and 'fulfil' is the correct spelling.
Using the objective case correctly in sentences enhances clarity and professionalism.
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