To determine the probability that Anais pulls out a blue slip of paper, we need to know the total number of slips of paper and how many of them are blue.
For the probabilities given in the options, we can denote the number of red slips as \( r \), blue slips as \( b \), green slips as \( g \), and orange slips as \( o \).
The total number of slips is:
\[ \text{Total} = r + b + g + o \]
The probability of pulling out a blue slip is given by:
\[ P(\text{Blue}) = \frac{b}{r + b + g + o} \]
Now, let's analyze the options for \( P(\text{Blue}) \):
- \( \frac{2}{5} \)
- \( \frac{3}{20} \)
- \( \frac{7}{20} \)
Without specific numbers for \( r \), \( b \), \( g \), and \( o \), we can't definitively calculate \( P(\text{Blue}) \). However, if we had the counts for each color, we could compute the probabilities and check which of the options corresponds to the calculated probability.
Please provide the counts for each color, or clarify if any additional information is needed to proceed.