In the last three years, nathan has experienced a failed marriage, the loss of a job, and bankruptcy. when he develops a serious health problem, he seems to have completely given up and is making little effort to follow his doctor's instructions to get well. nathan has developed a pattern known as

Learned helplessness

Explanation: Learned helplessness is the mechanism in which an individual believes or is aware about the that he/she will not be able to escape from the painful or unpleasant situations or environment because they have no control over the events or stimuli.Thus, the person is aware about the his/her helpless situation.

The situation mentioned in the question states about the learned helplessness of Nathan. Mental condition of Nathan has become serous issue because of the unpleasant events happened in his life .

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.