Final answer:
The group of 10 Hollywood screenwriters and directors took a defiant approach during the HUAC hearings by refusing to cooperate and answer the committee's questions. They were sent to prison on various charges.
Step-by-step explanation:
The group of 10 Hollywood screenwriters and directors took a defiant approach during the investigative HUAC hearings. They refused to cooperate and answer the committee's questions, seeing the hearings as a witch trial. They believed that their refusal to testify was protected by the Fifth Amendment, but they were still sent to prison on various charges.