Sonia wrote a program to figure out the area of a bedroom, but the outputs don't make sense. Which of the following might be a useful tool to determine the problem?
A. database
B. HTML
C. trace table
D. CSS
C. trace table
A trace table can help Sonia track the flow of her program and identify any errors or logical mistakes that may be causing incorrect outputs. By analyzing the values of variables at each step of the program, she can identify where the issue lies and make the necessary corrections.