The correct option is D Ukraine
The deserts are sparsely populated because of the harsh climatic conditions, infertile soil, also an improper place to live. The Arizona desert, Gobi Desert are hot deserts, whereas Ladakh Desert is a cold desert. Both kinds of the desert are unfit for the survival of a large population, there is very low availability of food and water. However, Ukraine is a country in Eastern Europe which is densely populated, the reason being the availability of food, water, technology, etc.