Final answer:
During the McCarthy era, some people took different measures to protect themselves when called before McCarthy's committee, including reciting patriotic phrases and providing names of others they claimed were Communists. The correct answer is option A, B, and D.
Step-by-step explanation:
During the McCarthy era, some people who were called before McCarthy's committee took various actions to protect themselves.
Options A, B, and D are correct:
1. They recited the Preamble to the Constitution and the Pledge of Allegiance to show their patriotism.
2. They promised on a Bible that they were not Communists.
3. They "named names" -- provided names of others who they said were Communists.
Option C, making false confessions in the hopes of lighter punishments, is not accurate. While some individuals may have made false confessions, it is not a common or recommended practice.