Final answer:
St. Jude employs pathos in their advertising by invoking feelings of guilt and compassion through stories and images of sick children to encourage donations for fighting childhood cancer and serious illnesses.
Step-by-step explanation:
St. Jude uses pathos in their advertisements by appealing to the audience's sense of guilt and compassion. This rhetorical strategy involves invoking emotions to persuade the viewer to act, often by showing images and stories of children who are battling serious illnesses. By presenting these emotional scenarios, St. Jude encourages viewers to donate and help in their mission to fight childhood cancer and other life-threatening diseases. The advertisements often feature testimonials, emotional music, and visuals of children and families affected by these health issues, aiming to strike an emotional chord with the audience and motivate them to support the cause.