Answer:
The correct answer is option D) A challenge.
Step-by-step explanation:
Whenever we face new things and test our capabilities we will be facing a personal challenge.
In this example we find that our goal is to compete in a choir contest, and we have encountered an obstacle in the middle that is that we have a hard time reading the notes. This means a challenge for us, since we must test ourselves and try to overcome this problem, in order to achieve our goal.
Given this information we can say that the correct answer is option D.