Which of the following tends to be the preferred medium for coordinating work, increases communication with people further up the hierarchy, and is an increasing source of information overload?

A) Electronic company magazines
B) Annual performance reviews with supervisors
C) Intranet web sites
D) E-mail
E) The corporate grapevine

E-mail is often the preferred medium for coordinating work, as it can be easily and quickly sent and received by multiple parties. However, it can also lead to information overload as people receive large amounts of emails, and it may not be the best medium for more sensitive or complex communication. Annual performance reviews and electronic company magazines are typically more formal and less frequent, while intranet web sites may be useful for accessing specific information but may not be as effective for communication or coordination. The corporate grapevine is an informal communication network that may provide useful information, but it is not a reliable or formal means of coordination.