Final answer:
The shift in tone in the speech to the Second Virginia Convention can be seen in the audience's changing emotions and reactions towards the speaker.
Step-by-step explanation:
The shift in tone that occurs in the speech to the Second Virginia Convention can be seen in the changing emotions and reactions of the audience towards the speaker. In the beginning, the speaker is described as showing hesitancy and embarrassment, but as he starts speaking about his own experiences as a slave, he elicits admiration and hope from the audience. The shift in tone is evident when the audience responds with thunderous applause and pledges to protect the speaker from being returned to slavery