Teens begin to form an identity by asking "who am i? " and "what kind of person do i want to be? " according to erikson, failure to achieve a stable identity leads to

role confusion and problems with subsequent stages              

Explanation:

Role confusion: In psychology, the term role confusion is referred to as the tendency of an individual not being able to understand his or her identity and is not being able to be sure of himself and herself in his or her place in society. This occurs during adolescence period in an individual's life.

In the question above, According to Erikson, failure to achieve a stable identity leads to role confusion and problems with subsequent stages

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.