The rub’ al-khali desert in saudi arabia is almost as big as a. south asia b. mesopotamia c. alaska d. texas

The answer to your question is

D.Texas

The Rub' al Khali desert is the largest contiguous sand desert in the world,encompassing most of the southern third of the Arabian Peninsula. The desert covers some 650,000 km2 .
The numbers aren't exact.

Hope it helps you

:)

C. Alaska. Alaska is 663,000mi wide and The Rub' Al Khali desert is 650,000mi wide. That's a long walk for camels for sure.