The answer to your question is,
Preoperational
-Mabel <3
B) to spread slavery into new territories
Answer:
b. The researcher has not ruled out the possibility that Y might cause X
Explanation:
In the given system, there is a theory that shows the relationship between the variables 'X' and 'Y'. The variable 'X' shows life satisfaction in a given population while the variable 'Y' shows how stable a democratic institution is. Therefore, the occurrence of the variable 'Y' can lead to the occurrence of the variable 'X'.
Although all of the options are important factors to determine social movility, I beleive that one amongst them has more impact. Social class at birth makes a significant difference. It is like a stating point in life, some people start with some advantages (like being born in a wealthy and educated family) and other with disadvantages (being born in a poor family with no access to education).
Although race or ethnicity and gender are important too, they can have a stronger or weaker impact depending of your social class. A person that forms part of a minority, for example, african american, will have a very different life depending on the economic situation of the family.
It is true that hard work and education is also needed but, again, social class can lead you to a more familiar and direct contact with them.
A) Dry Environments
An arroyo is a dry river bed or seasonally active creek. They are usually found in deserts or other arid climates and completely dry up between periods of activity due to water<span>-less conditions</span>