Answered

What form of persuasion fits this sentence? “My mom, who has been a teacher for 20 years, agrees that this activity will help students learn.”

Answer :

MrsTate
This form of persuasion is ethos. The author is using a credible source, a teacher, to prove that the activity will help students learn. It's important here that her mom is a teacher, if she wasn't, her mom might not be a credible source.