To determine which country has an absolute advantage for producing books, we need to compare the number of books produced per hour per worker across the given countries. The absolute advantage is held by the country that can produce the highest number of units per hour per worker.
Let's compare the units of books produced per hour per worker for each country:
- Singapore: 10 books per hour per worker
- China: 8 books per hour per worker
- Russia: 7 books per hour per worker
- Spain: 5 books per hour per worker
Among these, Singapore produces the most books per hour per worker with a total of 10 books. Therefore, Singapore has the absolute advantage in book production.
The answer is:
C. Singapore
