This industry was targeted as subversive and the individuals accused became known as the hollywood ten.
a. television
c. theatre
b. film
d. clothing

The film industry was targeted as subversive and the individuals accused became known as the Hollywood Ten. The correct option among all the options given in the question is option "b". All these started, when in the year 1947, 10 members of the Hollywood industry denounced the tactics employed by the HUAC during investigating the communist influences in the film industry.

Answer might be b i think