How many of the terms in the Drake equation are known with any degree of certainty? Which factor is least well known?

2.What is cosmic inflation: How does inflation solve the horizon problem? The flatness problem?

Interested in a PLAGIARISM-FREE paper based on these particular instructions?...with 100% confidentiality?

How many of the terms in the Drake equation are known with any degree of certainty? Which factor is least well known?

2.What is cosmic inflation: How does inflation solve the horizon problem? The flatness problem?