A(n) _____ is a mixture of two or more substances that combine easily

During the advanced stages of cystic fibrosis, the anatomic alterations cause the patient to have:

a. a primarily restrictive lung disease. b. a primarily obstructive lung disease. c. equal parts restrictive and obstructive lung disease. d. normal airways with emphysema.

Which of the following should be a factor when selecting an outside collection agency? 

A. select an agency that will use harsh collection practices B. choose an agency after a patient fails to respond to the final collection letter or has twice broken a promise to pay C. encourage the agency to sue the debtors D. permit the agency to handle all cases regardless of special considerations