Final answer:
Hitchcock depicts Stella's character in the film using a stereotypical minstrel tradition for comic effect, which reflects the racism and the use of Black stereotypes in the script.
Step-by-step explanation:
Hitchcock depicts Stella's character in the film by using a stereotypical minstrel tradition to create a moment of comedy and expecting the audience to laugh. This portrayal illustrates the inherent racism of the script and the use of Black stereotypes. However, the exclusion of Black characters erases the authentic Black experience altogether, making it meaningless within the discourse of popular culture.