Final answer:
Nick Carraway, not mentioned in the choices provided, is the character in 'The Great Gatsby' who moves east to learn the bond business, not Tom Buchanan.
Step-by-step explanation:
The character who moves east to learn the bond business is not specified in the available choices. The question appears to be referencing F. Scott Fitzgerald's novel The Great Gatsby, in which the character Nick Carraway moves to the East to learn the bond business. Neither Tom Buchanan nor 'Cannot be determined' is the correct answer since Tom Buchanan is already wealthy and part of the established social elite of East Egg, and does not pursue a career in bonds in the narrative.