Answer:
Mauritania has an absolute advantage in the production of dates
Neither countries have an absolute advantage in the production of grains
Explanation:
A country has an absolute advantage in the production of a good or service if it produces more quantity of a good when compared to other countries
Ireland and Mauritania produces 10t grains. None of the countries have an absolute advantage in the production of grains
Mauritania produces 25t of dates while Ireland produces 5t of dates. 25 is greater than 5, so Mauritania has an absolute advantage in the production of dates