What is the most important effect of the increasing amount of "screen time" in front of computers and television? OA. Therapeutic recreation specialists have had to adjust their practice to accommodate a less sedentary population OB. Recreation professionals have had to change how they advertise their programs to reach people when they are on their computers OC. People spend less time engaging in physical activity, an effect that recreation professionals are trying to address OD. Recreation professionals have seen the numbers of people in their programs decrease over time