Context: Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Ling and Maria open their lunch boxes in the school cafeteria. Neither Ling nor Maria got everything that they wanted. The table below shows which items they each wanted:

Look at the images of their lunches. Then answer the question below.
Ling's lunch Maria's lunch
What can Ling and Maria trade to each get what they want?
A. Maria can trade her almonds for Ling's tomatoes.
B. Ling can trade her tomatoes for Maria's broccoli.
C. Ling can trade her tomatoes for Maria's carrots.
D. Maria can trade her broccoli for Ling's oranges.
Choose the right answer from the options and respond with its letter.
Answer: B