The correct answer is option four.
In 1906 Gandhi introduced the term "satyagraha," which means "insistence in the truth," "soul force" or "truth force." He used the word to refer to the systematic and strategic civil struggle, resistance and disobedience, with moral and political purposes, and with a spiritual aspect.
A couple synonyms for the word guffaw would be: laugh, chuckle, cackle, roar with laughter.
Hope that this helped! Good luck! :)
Do is a helping verb, you is the subject, and know is the verb
