Xonex is a teleservices organization. It has branches all over Canada and a few across the United States. It hosts a company-wide seminar on employee rights, payroll processing, and tax issues in Ontario. All the branches of Xonex have around thousand employees, each. Which of the following collaboration tools will be most appropriate for Xonex to use for the seminar?

a. Presence information
b. Instant messaging
c. A podcast
d. A Webcast

d. A Webcast
A Webcast is a form of Web conferencing that uses streaming media technologies to broadcast video and/or audio over the Internet from a single content source to many listeners or viewers simultaneously. A Webcast may be distributed either live or on demand.