Answer:
3. Free and fair elections are necessary for a democracy to function is the correct answer.
Step-by-step explanation:
As stated in the question, the excerpt belongs to "Supporting Free and Fair Elections." To support the correct answer it is necessary to mention that the speaker provides the results of elections ("provide an important opportunity to advance democratization and encourage political liberalization") and then, the characteristics of a fair and free election are described, appealing to freedom of speech and other rights that make a democracy work properly. The excerpt also describes other effects, such as the discussions and debates generated around them, so number 3 is the correct answer.