Based on the provided information, we need to determine how many thousands of units of corn Congo can produce in one week. The table gives us the production capabilities in terms of thousands of units for both the United States and Congo.
According to the table:
- The United States can produce 60 thousand units of corn in one week.
- Congo can produce 20 thousand units of corn in one week.
- The United States can produce 10 thousand units of diamonds in one week.
- Congo can produce 5 thousand units of diamonds in one week.
Focusing on the production of corn by Congo:
- Congo can produce 20 thousand units of corn in one week.
Therefore, the correct option is:
20