<span>The question is asking us ""Which skill is NOT essential in business and financial operations occupations?" Let's imagine someone working in business - they could for example work in an office, in front of computer, analysing the finances of their company. They would not necessarily be talking to the clients directly or presenting the company to the public - so the correct answer is "a good public speaking voice"</span>
Written prose tends to follow a specific rythm and rhyme scheme. Also, written prose usually has sentence structure that differs from casual speech in order to fit that rythm and rhyme.
