Which of the following does a business setting call for?

formal language

avoiding slang

a detached tone

professionalism

all of the above

all of the above except choice 3

The answer is the 6th option all of the above except choice 3 because there is no use of detached tone for the business setting call

The answer is all of the above except choice 3.

In a business setting, you never want to use a detached tone. This gives the impression to your colleague/boss/etc. that you don't care and don't really want to be there. It shows that you don't see them as important and don't care about what they have to say. It won't achieve anything for you.