In this task, you will be given a short story. One sentence from the story is chosen. Consider the events that happen before that sentence, or are likely to have happened before it. Does any of them directly cause it, or simply make it possible? You should write your answer in the form " A >causes/enables> B". Try to use phrases and sentences from the story to compose your answer when possible.
Q: story: I've a friend who is pretty ill so I thought it best to call him. I called him over and over yesterday but he didn't answer. So I began to worry. Then wouldn't you know it he called me! So now I know my friend is OK and so I won't worry any more.
 selected sentence: I've a friend who is pretty ill so I thought it best to call him.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
My friend gets ill >Causes/Enables> I think it best to call him