Final answer:
Julius and Ethel Rosenberg were executed at Sing Sing prison in 1953. The correct answer is d) Sing Sing Prison. The Sacco and Vanzetti case also garnered international protest but is unrelated to the Rosenbergs' case.
Step-by-step explanation:
The couple you are referring to, Julius and Ethel Rosenberg, were found guilty and sentenced to death for espionage during the Cold War. They were executed at Sing Sing prison in June of 1953. Despite worldwide appeals for clemency, their sentences were carried out. Therefore, the correct answer to where the couple was thrown in prison is d) Sing Sing Prison.
In a different case, Bartolomeo Vanzetti and Nicola Sacco were involved in court proceedings after a 1921 verdict, with protests in London trying to prevent their execution, indicating that historical cases of this nature have often garnered significant international attention.