In a well-known study conducted in the 1950s, social psychologist leon festinger and colleagues analyzed the friendship patterns among graduate students living in one of the dormitories at mit. the researchers found that strongest predictor of friendship was
a. how extraverted the students were
b. similarity in terms of hobbies and activities
c. similarity in terms of basic demographics (age, gender, being single versus married, etc.)
d. how close the students lived to one another

The answer is  d. how close the students lived to one another.

Explanation:

Friendships were moke likely to start the closer people were physically, Festinger and his team found out. . A similar pattern was observed regarding attitudes; attitudes of dormitory residents showed a tendency to converge.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.