Which sentence from "Lessons of Dr. Martin Luther King, Jr." best shows that Chavez is trying to connect with his audience to persuade them to join his cause? "My friends, as we enter a new decade, it should be clear to all of us that there is an unfinished agenda" "Pesticides have created a legacy of pain, and misery, and death for farm workers and consumers alike." "We have witnessed truckloads of grapes being dumped because no one would stop to buy them." "Our workers labor for many hours every day under the hot sun, often without safe drinking water"