Final answer:
To make 32 ounces of pasta, Sora needs 20 ounces of flour.
Step-by-step explanation:
To find out how much flour Sora needs to make 32 ounces of pasta, we can use the ratio of 3 parts water to 5 parts flour. This means that for every 3 parts water, there are 5 parts flour. Since the total number of parts is 3 + 5 = 8, we can divide 32 ounces by 8 to find out how many ounces each part represents. 32 ounces / 8 = 4 ounces.
Now that we know that each part represents 4 ounces, we can multiply this by the number of parts of flour. In this case, there are 5 parts of flour. 4 ounces/part x 5 parts = 20 ounces.
Therefore, Sora needs 20 ounces of flour to make 32 ounces of pasta. The correct answer is B. 20 ounces.