Increase the number of patients Nurse Moss assesses by a factor of 5.
The optimum solution is to five-fold (increase by a factor of 5) the number of patients Nurse Moss assesses. The 5X Rules advise an increase by a factor of five in each of the consecutive test due to the fact that scale refers to the number of interactions inside the test, and in this case, the number of patients that are getting the evaluation.
A change in the test's parameters, such as the personnel or even the language used, would represent a change in scope as opposed to scale.