Which of the following statements is most true? a. Email has no impact on a user's productivity or focus. b. Checking emails frequently improves a user's focus by reminding the user to complete tasks on time. c. Email interruptions cause loss of focus, requiring 10-15 minutes after each interruption for a user to regain focus. d. Knowledge workers commonly receive and reply to more than 10,000 emails per day, which slows a user's productivity.
