To find the fraction that represents the difference between the number of fielders and catchers, we need to find the difference between the fractions.
First, let's find the fraction representing the number of fielders. Mark says that the rest of the cards (excluding the pitchers and catchers) are fielders. So, to find the fraction of fielders, we need to subtract the fractions representing the pitchers and catchers from 1 (since the total number of cards is divided into three parts: pitchers, catchers, and fielders).
1 - (8/24 + 5/24) = 1 - (13/24)
Now, we have the fraction representing the fielders, which is 11/24.
Next, let's find the fraction representing the difference between the number of fielders and catchers. We subtract the fraction representing the catchers (5/24) from the fraction representing the fielders (11/24):
11/24 - 5/24 = 6/24
Therefore, the answer is B. 6/24, which represents the difference between the number of fielders and catchers.
To summarize, the fraction that represents the difference between the number of fielders and catchers is found by subtracting the fraction representing the catchers from the fraction representing the fielders.