Final answer:
Apollo's prophetic powers in the play 'Eumenides' are best described as 'prophecy,' which refers to his ability to foresee future events and deliver divine messages. The correct option is (c).
Step-by-step explanation:
The prophetic powers attributed to Apollo in the play Eumenides refer to his ability to foresee future events, which is best described by the term prophecy.
This is distinct from telepathy, which involves the transmission of thoughts between minds; clairvoyance, which involves gaining information about an object, person, location, or physical event through means other than the known human senses; and psychokinesis, which is the ability to manipulate matter with the mind.
Apollo's prophetic gift granted him the power to deliver divine messages and foresee the future, a common attribute of deities associated with oracles and divination in ancient Greek religion and mythology.