Why did members of the house un-American activities committee target screenwriters directors and others who made there living in the movie industry

Due to suspicion of communist activities.

Explanation:

During the Cold War, the authorities accounted for within the country with anyone associated in any way with communism. Thus, the action was taken in which about ten Hollywood directors and screenwriters were arrested. They were arrested on suspicion of supporting and propagating communist activities. Most were imprisoned, and some members of the group admitted that there were some communist activities in Hollywood.

the right choice would be a. culture within the city-state. c. loyalty to the police. d separation by land and sea.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.