Answer:
Third option
Explanation:
I believe "long winter days have been proven to affect many people’s moods" or the third option is the best answer for this question, because it genuinely sounds like a concluding statement. It's saying that long winter days have been PROVEN to affect many peoples moods which means that the previous statements made in this paragraph must of been facts that supports this final statement that long winters affect people moods.
Hope this helps.
Answer: If a linear system has no solution, the two lines are parallel. If it has one solution, the lines will intersect at exactly one point because they have different slopes.
