Annabel is an information specialist. Last year her boss evaluated her with an essay appraisal. She and several of her coworkers were so dissatisfied with the general and qualitative nature of the process that they requested a change. This year he wrote about several key behaviors that she exhibited throughout the year that were very important for her job performance. For instance, he described how she spent extra time evaluating network security protocol options. What appraisal technique is he using?
a) Graphic rating scale
b) BARS
c) Critical incident
d) Checklist appraisal
e) Essay appraisal

With the information provided it seems that the appraisal technique that he is using is a critical incident. This term refers to analyzing and documenting employee behaviors during certain events, and then stating in which ones they performed well and which ones need improvement. Such as is the case in this scenario as the amount of time that Annabel spent evaluating network security protocol options was documented and analyzed, among other behaviors.