Answer:
c. Studies show that the death penalty is not an effective deterrent.
Step-by-step explanation:
Several scientific evidences, observed through scientific research and analysis of specific facts and results, affirm that the death penalty is not an effective deterrent, since it cannot fight criminality, nor prevent hideous crimes from being done within society. Countries that apply the death penalty do not have low crime rates, which proves this statement, from a social point of view. However, countries with a high level of education, low unemployment rates, high HDI and no death penalty, show positive results in combating heinous crimes.