Which of the following employees would not be able to assert a valid claim against her employer for deprivation of rights against unlawful search and seizure guaranteed by the Fourth Amendment?

a$.$ A public school teacher after the employer places hidden surveillance cameras in the teachers$$ union office

b$.$ A clerk typist at Portsmouth City Hall whose employer monitors her computer usage all day with no valid business reason

c$.$ A mid$-$level manager at a private insurance company whose employer monitors her computer usage all day with no valid business reason

d$.$ A state university employee who discovers surveillance cameras that the university set up in a public restroom on campus