a group of two or three syllables is referred to as a foot.
https://www.google.com/url?sa=i&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjX2PiTydneAhUrm-AKHcd8BvUQjRx6BAgBEAU&url=http%3A%2F%2Fwww.mammothmemory.net%2Fenglish%2Fliterature%2Fstress%2Fiambic-pentameter-shakespeare.html&psig=AOvVaw0bE4scuhNLQAY3LQ4a7I_E&ust=1542480315301492
thatsan example
Q: Blank is the repetition of a stanza
A: A chorus
The answer is B because there is no verb present so it is a fragment.
No, his argument is oversimplified. (But also who recommends slavery as an answer to anything?!)
