Here are the answers to your questions:
Question 1:
A) Lines in poems are organized into stanzas.
Question 2:
A) What does each stanza in a poem have?
Answer: a central idea. (Note: While stanzas can have the same number of lines or rhyme scheme, they do not necessarily have to.)
Question 3:
A) Which description defines rhyme?
Answer: the repetition of an ending sound.
Question 4:
A) Which description defines a rhyme scheme?
Answer: a pattern based on the last sound of each line.
Question 5:
A) Which word describes the order of stressed and unstressed syllables?
Answer: meter.