is this correct?

Monica, a self-employed taxpayer, travels from her office in Boston to Lsbon, Portugal, on business. Her absence of 13 days was spent as follows: a. For tax purposes, how many days has Monica spent on business? days b. What difference does is make? If Monica's trip satisfies the test of the altocated between business and personal. c. Could Monica habe spent more time than she did vacaboning on the trip without loss of existing tax benefits? Monica isatisfy the test Under the test, she could have viscationed for more days assuming that the days did not interfere with the preceding and succeeding days provision