The drink "kykeon," which Iambe gave to Demeter, contained water mixed with barley and mint, but the barley contained traces of ergot, an essential ingredient in: a. indigo b. mercury c. "death cap" mushrooms d. spider venom e. LSD

LSD

Explanation:

The drink "kykeon," which Iambe gave to Demeter, contained water mixed with barley and mint, but the barley contained traces of ergot, an essential ingredient in LSD.

kykeon was an ancient Greek drink made mainly of water, barley, and herbs and other various description which was also said to contain psychoactive elements.It was used at the climax of the Eleusinian mysteries(rite passage held every year for the cult of Demeter and Persephone based at Eleusis in Ancient Greece).

Lysergic acid diethylamide (LSD) is a hallucinogenic drug, one of the most potent mood changing chemical with effects typically include altered  awareness of perception,thoughts, feelings and awareness of one's environment.

yeet yeet yeet yeet yeet yeet yeet yeet yeet yeet

well to answer ur question to be completly honest