Final answer:
A character with a mulberry birthmark who speaks at an assembly is from Golding's 'Lord of the Flies,' not Hawthorne's 'The Birthmark'. The latter is a story about a scientist's obsession with his wife's small hand-shaped birthmark and his attempts to remove it, showcasing the themes of perfection and consequences of science.
Step-by-step explanation:
The small boy with the mulberry birthmark does not appear in the excerpts provided or in the known narratives of Nathaniel Hawthorne's The Birthmark. The mulberry birthmarked boy is actually a character from William Golding's Lord of the Flies, not from Hawthorne's story. In Golding's novel, the boy with the mulberry birthmark raises the concern about the existence of a 'beastie' or a monster on the island, which terrifies the other boys and contributes to the overarching theme of fear and the loss of innocence.
In contrast, Hawthorne's The Birthmark revolves around the obsession of a scientist named Aylmer with the removal of a small, hand-shaped birthmark on his wife Georgiana's cheek, which reveals themes related to the pursuit of perfection and the unintended consequences of science and human intervention.