Read the excerpt from "My First March.” "Exactly!” Mama said. "By marching, we’ll be letting the government know that we want those unfair laws to be changed. And while we march we’re going to chant, and after we chant, we’ll sing some songs. One way or another, we’re going to make sure the government hears our message.” Based on the excerpt, what is the best reason why the reader would conclude that Mama values integrity?