A study is designed to evaluate how an employee reacts to interruptions when attempting to answer his/her email. After several interrupts, the employee comments to his coworkers, "What’s with all the interruptions?" In terms of the participant’s research awareness, your design revealed .

participant perceives deviations but unrelated to researcher

Explanation:

In the case when the study is designed in order to evaluate how an employee reaction for interrupt at the time when an employee attempt to answer his or her email. After various interruption, the design should represent that there is a the participant that perceives the deviation but it is not related to the researcher as the changes responses via participants attach with the deviations

Therefore as per the given situation, the above represent the answer

b. take periodic breaks and alternate between tasks.  

will increase work efficiency, and avoid health issues.