You're making great progress on your assignment. You've defined the purpose of your message, identified both the primary and secondary audiences, given thought to your audience's reaction, and have begun planning your message. Now it's time to select the best combination of media and channels to reach your audience. Remember that the medium is the form the message takes (such as a Twitter update) and the channel is the system used to deliver it (such as a mobile phone) Your message will need to be delivered to all design engineers at headquarters who will be expected to take part in the shadowing program as well as the sales staff at 20 different retail stores that will be involved in this program. You have a wide array of media/channels to get across your message, but what's the most effective way