Final answer:
Foxface's death in 'The Hunger Games' is considered Peeta's kill because she dies from eating poisonous berries he gathered, and the game makers credit a tribute with a kill for any actions leading to another's death.
Step-by-step explanation:
The question you’ve asked pertains to the events in the novel The Hunger Games by Suzanne Collins. In the book, Foxface is another tribute who competes in the Games. The character Peeta indirectly causes her death by leaving out poisonous berries, known as nightlock, which she steals and consumes without realizing their lethality. Since Peeta had gathered the berries, even unknowingly, the game makers consider her death to be his kill. This is because the rules of the Games credit a tribute with a kill if their actions, intentional or not, result in another tribute’s death.