Thom Hollis Works as a Financial Advisor for TD Bank

Thom Hollis works as a financial advisor for TD Bank Financial Group. His job involves providing investment advice to many clients, in person or on the phone, and writing many letters and e-mails. He has an appointment tomorrow with Ji-Wan, a client, to review her personal investment portfolio. Before she comes in, Thom has to review her profile, decide what changes to suggest, and put together a proposed portfolio. He has a recent finance diploma, but because he is still relatively new to his job, he wants to collect as much information as he can on appropriate investments for her, so he decides to send an e-mail to Alyson, his manager, to see if she has any suggestions or advice. Besides preparing for his meeting with Ji-Wan, Thom has several other tasks he must work on.
-Thom also notices that some of his sentences may confuse a reader because of their length. Your text claims that a reader will normally comprehend less than 80% of the meaning of a sentence if the sentence is too long. How many words does your test suggest as the limit?

A) 8
B) 15
C) 20
D) 28