Who was punished by standing in water he couldn't drink beneath fruit he couldn't reach?

The story behind the answer

Tantalus is correct. In Tartarus he stood in a pool that receded whenever he tried to drink, beneath branches of fruit that lifted away when he reached—an eternal tease matching his crimes against the gods (often told as serving his son Pelops as a meal or stealing divine secrets and ambrosia). This is the origin of the word “tantalize,” meaning to torment with unattainable temptations; the metal tantalum is similarly named because it resists absorption.

To remember the options: Tantalus is tantalized by food and water; Sisyphus endlessly pushes a boulder; Prometheus is chained while an eagle eats his regenerating liver; Cassandra foretells the truth but is never believed.