Which element of a text best helps the reader determine the central idea?

What was the basic premise of the civil rights act if 1964

In the story "seventh grade," how do victor's hopes and expectations about teresa at the beginning of the school day compare with his hopes and expectations about teresa at the end of the school day? his hopes and expectations are exactly the same at the end of the day. his hopes and expectations are completely different at the end of the day. his hopes and expectations are strengthened by the end of the day. his hopes and expectations are weakened by the end of the day.

Iwill have sailed around the world by the end of next year. what is the verb form in the sentence? future perfect past emphatic present progressive past perfect