If they wanted the slaves to convert, they could have done it in other ways, especially since many slaves died very fast, before they would have time to convert so c and because of this d are not true. B is also not true, so the correct answer is a -and this is also true, they saw themselves more in tribal terms
I would be very skeptical of a phrase "reason enough to commit a crime" - a "good" reason to commit a crime is a very debatable thing.
But think of it like this, if the unequal basic service access means for example access to clean water and a father decides to steal some bottles of mineral water from a shop for his sick son, then he was motivated by the lack of access to clean water (while some people living in a rich areas might have clean water running from their taps) - so in some cases, yes, might be a reason to commit a crime.
This really depends on the context and the particular situation.
Mass production and assembly lines commonly known as Fordism at the beginning of the 20th century, turned around the economy and societies as a whole.
It led to a widespread improvement of life quality not only for the middle and upper classes, but for the working class, as well. Mass production improved the manufacturing of goods and productivity as a whole. It had a positive impact on the trade, as well. This led to lower prices of goods and services, and when the prices are low, there is a possibility to buy more goods for the same amount of money, which led to the creation of wealth and increasement of consumption. In that way the burgeoisie improved their social status. This created the phenomenon called mass society.