In Furman v. Georgia, the Supreme Court ruled that the death penalty violated the Eighth Amendment because the death penalty was A)
used to deter criminals.
B)
used in nonviolent cases
C)
applied unequally across states.
D
already abolished in most states.

applied unequally across states.

Explanation:

The 8th amendment of the United States constitution prohibited law enforcements to use cruel and usual punishments for the criminal offenders. But since its creation, death penalty was never really considered as a cruel punishments by the government since the methods that's used to carry on the punishment was quick/not torturous.

But one problem remains. Not all states are on the same page regarding when they should give death penalty as a punishment.

In Furman V. Georgia, Furman was sentenced with death penalty because he killed someone during an armed robbery in Georgia. But a similar case happened in Florida and the perpetrators were given 25 years of prison as a punishment. Since the application of death penalty was unequal across states, Supreme court ruled that death sentence under Furman V. Georgia was unusual.

i think the answer is a and i hope this ; ))