Surgeons removed a sizable part of Tom's stomach to prevent the spread of a cancerous tumor.Following a successful recovery,Tom's reduced appetite for food is most likely attributable to his body's reduced secretion of

A) PYY.
B) leptin.
C) ghrelin.
D) epinephrine.

Ghrelin is a hormone that stimulates hunger, and is secreted by cells in the stomach. When Tom had part of his stomach removed, it is likely that the cells that produce ghrelin were also removed, leading to a reduced secretion of the hormone and consequently, a reduced appetite. PYY and leptin are hormones that help regulate feelings of fullness, but they are not primarily secreted by the stomach. Epinephrine is a hormone involved in the body's stress response and does not play a major role in appetite regulation.