For this one we need to think about the context clues in the sentence. we're talking about something a political candidate did the day before an election at a village square.

"a eulogy" and "a lecture" don't really fit the context since those words don't match addressing voters before a vote. 

"a sermon" also isn't quite right because candidates don't usually give religious sermons. that leaves choices b "an address" and e "a speech". 

Since addressing voters directly at a public place like a village square is a common way for candidates to campaign, I think choice E "a speech" best captures what the candidate was most likely doing right before the election day.

So to fill in the blank correctly, it should be choice e - "the candidate made a speech at the village square a day before the election".