The hiring manager is asking if you can juggle multiple things at once. It's a fair question, especially with the sheer number of phone calls, emails, and meetings that can come up on any given day. Multitasking effectively means being able to switch focus with efficiency. Make sure that your answer demonstrates that you can complete tasks and achieve goals, not just work on multiple things at once. Prior to the interview, determine whether multitasking is a job requirement. Carefully read the job description, paying close attention to the requirements. It should be evident whether this job requires multitasking or singular focus. Once you've figured out what the interviewer is looking for, match your skills and qualifications to the job, and emphasize those most valuable skills to the employer.