Social worker can evaluate the effectiveness of their direct work with clients by employing

Social worker can evaluate the effectiveness of their direct work with clients by employing practice evaluation.

Explanation:

The systematic assessment of practice evaluation refers to the assessment of work performed by any group or a specific individual in context to social services, like the therapists or group of doctors and nurses at any clinic or a hospital. The objective lies in the practitioner’s work’s quality improvement and safety along with his or her training further or any complaint investigation. Here the staff member’s charts are reviewed along with comparison of his or her treatment upshots to those of peers.  

answer; tech (a) is correct;

answer; lags, push the econ below the natural level of output;