What does the author of "the expert" mean when he says that katie is "all business"?

To say someone is "all business" means that the person is very serious.  They take the job or task at hand and would to complete it to the best of their ability.  "All business" means very little joking around, taking responsibility for their actions, and fixing problems.  

answer: there description

explanation: the description of a character

hello everyone my name is nevaeh, i know everyone needs in some way, shape, or form and i am willing to provide. i set up a google classroom where people can ask me questions and get on work. no question is a stupid question so do not be afraid to ask. i usually only focus on core subjects but if you ask i will with other specialized subjects. i can do essays all the way to power points : )

my google classroom is the code is 7hr2k4

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