I want to help you but I genuinely have no clue
Id say C but in reality it was more profitable because farmers had to pay slaves next to nothing if not anything and could have multiple workers in poor conditions so mass amounts of free workers saved them money and they could work them 24 hours a day until they dropped making the process go faster producing more than other competing farms. A sad truth from our past.. hope this helps!
They tried, convicted, and executed the king. It was created to deal with threats to France. get rid of any traces of the old social order so they took nobles' lands and got rid of their titles.
Encourages; encourages; increases
Demeter, the Goddess of the Harvest. What happened was that Demeter wanted to get her daughter back from Hades, so she took a "resignation" from her duties as the harvest goddess and all plants were decaying on Earth, and droughts started.