Answer:
C. The more important positions in society require better qualified people.
Explanation:
The Davis-Moore thesis is all about justifying social stratification and it was written by Kingsley Davis and Wilbert Moore as they believed that some tasks or jobs are more valuable than others and the people who perform the more valuable work will be better rewarded which will in turn make them work harder.
From the given outline, the missing outline of the thesis is option C that states that the more important positions in society require better qualified people.
I would say camera it was invented by Ibn ul Haitham.
Elizabeth Cady Stanton was an early leader of the woman's rights movement, writing the Declaration of Sentiments as a call to arms for female equality.