The meaning of "dispense" in this sentence is to give out or distribute.
The meaning of "dispense" in this sentence is "to give out or distribute." In order to determine the meaning, you can consider the context of the sentence and the words used. In this case, the sentence mentions that the volunteer's task was to dispense trash bags, which implies that the volunteer was responsible for giving out or distributing the bags. Therefore, the correct answer is "to give out or distribute."