The correct answer is C) She recruited her brother to pass secrets to the Soviets.
The statement that explains Ethel Rosenberg's role in the espionage case is "She recruited her brother to pass secrets to the Soviets."
Ethel and Julius Rosenberg proportionated valuable, secret, military information to the Soviet Union in the times of World War II. David Greenglass, Ethel's brother, was a machinist at the Los Alamos Laboratory in New Mexico. He and Rith, his wife, passed information to the Soviets about the United States Nuclear bomb project.
Americans did not want to get involve in the early stages of WWII.
