D. When you set a goal, you want it to be difficult but realistic. For example, if you are not very good at running, you maybe want to set a goal like "try to run 1 mile without getting tired this month". This is a difficult goal to reach, but it is realistic. If you had said "Run 100 miles without getting tired this month", this is unrealistic because you are not very fit
hope this helps:)
in life, there simply isn't one.
His immune system is exhibiting an allergy to pollen called Hayfever...hope this helps :))) x
