Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.
Q: Suppose I tell something to my companion and I want to make sure he understands me. I thought I may simply ask 'Do you understand me?'. But recently I heard that in such cases I should ask 'Does that make sense?' instead. Is this true? Which option is appropriate to use in business communication?.
A: 
'Do you understand me?' slightly carries the implication that it is your fault if you do not understand. 'Does it make sense?' carries the implication that it is my fault if you do not understand. So politeness suggests that the latter is better.