Answer:
Mary and Jamal received the message through different channels.
Explanation:
Both Jamal and Mary listen to the campus president's speech about tuition increases in their campus. But Jamal attended the meeting whereas Mary listen to the podcast of the speech in her car while driving. Thus both Mary and Jamal perceived different conclusion from the president's speech.
The fact that Jamal and Mary received different messages is because both Jamal and Mary received the message from two different channels.
Thus the answer is
Mary and Jamal received the message through different channels.