Answer :

To determine how many cups of flour are needed to make 6 cupcakes, we need to start by knowing the amount of flour needed to make a single cupcake. Let's assume that we have a recipe that specifies the amount of flour required for one cupcake.

### Step-by-Step Solution

1. Determine the Flour Amount for One Cupcake:
Let’s assume the standard recipe indicates that 1/4 cup of flour is needed for one cupcake.

2. Calculate the Total Amount of Flour for 6 Cupcakes:
If 1 cupcake requires 1/4 cup of flour, then to find out how much flour is needed for 6 cupcakes, we can use the following calculation:

[tex]\[ \text{Total Flour Needed} = \text{Number of Cupcakes} \times \text{Flour Required per Cupcake} \][/tex]

Substitute the given values into the formula:

[tex]\[ \text{Total Flour Needed} = 6 \times \frac{1}{4} \text{ cup} \][/tex]

3. Perform the Multiplication:

[tex]\[ \text{Total Flour Needed} = 6 \times 0.25 \text{ cups} \][/tex]

[tex]\[ \text{Total Flour Needed} = 1.5 \text{ cups} \][/tex]

### Conclusion
Therefore, you need 1.5 cups of flour to make 6 cupcakes.

So, the correct answer is:
b. 1½ cup