A(n) is a method or plan chosen to bring about a desired future, such as achievement of a goal or solution to a problem

strategy

Explanation:

Strategy -

It refers to the planning for a goal for the future time , is referred to as a strategy.

Strategy is pre planned , and the person plans it with all the proper knowledge and tactics in order to have good future benefits and do not face any problem in future time.

Hence, from the given statement of the question,

The correct term is strategy.

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.