Answer:
a. True
Explanation:
Business writing has a general tip to always make sentences shorter than 20 words. However, it would be very monotonous if every single sentence in a business text was short. Therefore, it is wise to introduce a longer sentence every now and then in the text. It should be kept in mind that even in that case, the sentence shouldn't be too long. Then it would just bring incomprehensibility in the text.
