Questions

The Remedy Action Request System, also realize as Remedy or Action Request System, is a client-server trouble ticketing function produced by BMC and used by companies to track internal issues and customer-reported problems. If a client calls customer service to report a service trouble, such as telephone problems or internet access, the customer service support agent would open a Remedy ticket. Treatment then routes the ticket to the proper trouble queue and team responsible for resolving the issue

Julius Robert Oppenheimer was an American theoretical physicist and professor of physics at the University of California, Berkeley. Oppenheimer was the wartime head of the Los Alamos Laboratory and is among those who are credited with being the "father of the atomic bomb" for their role in the Manhattan Project, the World War II undertaking that developed the first nuclear weapons. The first atomic bomb was successfully detonated on July 16, 1945, in the Trinity test in New Mexico.

Ans. C.
The answer is the ‘vilest thing that can be done by a person.' Vile/vilest means extremely unpleasant. Option A: A singular thing is being talked about (indicated by ‘is’) hence, things can’t be used. Option B: ‘is’ indicates singular activity, hence things can’t be used.
Option C: It makes the sentence grammatically and structurally correct.