Answer: To guard against the influence of factions while preserving liberty.
Explanation: After having presented the problems brought about by the existence of factions in democracy, Madison argues that both forbidding factions would go against liberty and preventing them from coming into existence (by enforcing absolute equality) is impossible. The solution he proposes is to let factions be and only control their effects to avoid sinister interests from harming the population.
Answer: Remembering what her motivation for learning French was at the beginning, and making short-term goals, instead of long-term goals would most help Jana achieve her goal.
Explanation: Motivation is the motor of learning. If Jana started learning French, but one semester later she didn't speak as much as she did before, is probably due to setting long-term goals, instead of short-term goals. Languages are a long road to walk, and setting ambiguous and unspecific goals can lead us to lose motivation since we can believe It's impossible to achieve them. However, If Jana also set specific short-term goals, she would see progress in a short time and be more motivated to continue.
If you are lacking motivation a good person to talk to is a counselor, therapist, or life coach.
Background information in the exposition is the answer
It seems as though the author of this paragraph thinks that all mankind would be happy if they gave a second thought to what they are about to do. In a sense this is true, but yet, we would all be cavemen if we followed that philosophy. Thomas Edison would say, "Should I make an electric light bulb..... naaaah!" As you can see, we would not get very far in life if we did that. We would stick to normality. Some radical ideas are good, though some are bad. And in the branch of 'bad' would be necessary... necessary for the good of man.