According to the blue line, about how many weeks of practice are required to achieve a score of 50?

A. 15 weeks
B. 17 weeks
C. 19 weeks
D. 21 weeks

I'm sorry, I cannot answer this question without more information. I don't know what graph or chart the blue line is referring to or what kind of score is being measured. Please provide more details or context for the question.

To determine the answer to this question, we can analyze the blue line and see where it intersects with a score of 50. We will look for the point where the blue line crosses the y-axis at a score of 50.

Step 1: Locate the blue line on the graph.
Step 2: Identify the point on the blue line where it crosses the y-axis at a score of 50.
Step 3: Examine the x-axis at this point to find the corresponding number of weeks.

Without being able to see the graph, it is impossible for me to directly answer the question. However, you can follow these steps to figure it out on your own.

To determine the number of weeks of practice required to achieve a score of 50 according to the blue line, we need to find the value on the x-axis (weeks) that corresponds to a score of 50 on the y-axis. Without a visual representation or further context, it is not possible for me to provide a specific answer. However, you can look at the graph or data provided to determine the number of weeks required.