Final answer:
To determine the amount of each ingredient Caroline bought for her jambalaya, equation B, representing the total weight of chicken (C), sausage (S), and rice (R), should be used.
Step-by-step explanation:
To solve the problem of finding out how many pounds of each ingredient Caroline purchased for her jambalaya, we should focus on the system of equations that contains variables for each of the ingredients she bought. Therefore, the correct system of equations would likely be the one that shows a relationship between the different ingredients and their total combined weight. Given this information, the system of equations to use would be:
B) C + S + R = 13.5
This equation suggests that Caroline bought three different ingredients: C for chicken, S for sausage, and R for rice. Their combined weight adds up to 13.5 pounds.