Choice A is the best answer. Lady Carlotta learns about Mrs. Quabarl's chil-dren Claude, Wilfrid, and Irene (lines 53-58"During ...was"). The narrator then describes Mrs. Quabarl's child Viola as "something or other else of a mould equally commonplace among children of that class and type in the twentieth cen-tury" (lines 58-61"temperament ... century"). This statement about Viola implies that all of the Quabarl children have skills typical, or "of a mould equally commonplace," to other peers in their social class.
Choices B, C, and D are incorrect because the narrator does not indicate that all of the Quabarl children are unusually creative and intelligent, hostile to the idea of having a governess, or more educated than their peers.