To determine which country is most likely to have the highest population based on the tendency of populations to concentrate in plains, we can consider the total area of each country. Generally, a larger area might suggest a greater availability of plains where populations can settle.
Let's break down the areas (in square kilometers) of each country:
- Italy: 301,340 sq km
- Austria: 83,871 sq km
- Great Britain: 209,331 sq km
- Spain: 505,992 sq km
From these areas, it's evident that Spain has the largest area among the mentioned countries, with 505,992 square kilometers. If we assume that populations tend to concentrate in plains and considering that a larger area might have more plains, Spain would be the most likely to have a high population.
Thus, the country most likely to have the highest population is:
○ Spain
