To solve the problem, we need to determine how many sausages Edgar needs based on the ratio of eggs to sausages, which is 3:2.
Given that Edgar is using 12 eggs, we can set up the ratio:
\[ \frac{\text{Eggs}}{\text{Sausages}} = \frac{3}{2} \]
Let \( S \) be the number of sausages. Using the ratio, we have:
\[ \frac{12}{S} = \frac{3}{2} \]
Cross-multiplying to solve for \( S \):
\[ 3S = 12 \times 2 \]
\[ 3S = 24 \]
Now, divide both sides by 3:
\[ S = \frac{24}{3} = 8 \]
Therefore, Edgar needs 8 sausages.
The correct response is: 8 sausages.