What does this excerpt foreshadow

In shakespeare’s hamlet what word can be substituted for allusion in the phrase the illusion is that not only does larry us die as expected but hamlet is doomed to die by the poison on his own sword as

Which of the following will most likely happen if the pancreas does not produce sufficient insulin? blood sugar will decrease because insulin lowers blood sugar when it rises too high. blood sugar will increase because insulin increases blood sugar when it falls too low. blood sugar will increase because insulin lowers blood sugar when it rises too high. blood sugar will decrease because insulin increases blood sugar when it falls too low.

Identify how chekhov’s background and beliefs may have influenced his short story “the bet”.