Final answer:
The statement that is true for all Central Asian countries is that they are all landlocked. This region, also known as Turkestan, includes nations such as Kazakhstan and Uzbekistan, which are characterized by steppes, deserts, and the absence of open sea access. Therefore, the correct option is C
Step-by-step explanation:
The correct statement that is true of all countries in Central Asia is c. they are all landlocked. Central Asia, sometimes referred to as Turkestan, consists of countries like Kazakhstan, Uzbekistan, Turkmenistan, Tajikistan, Kyrgyzstan, and Afghanistan.
These countries are characterized by extensive steppes, high mountains to the east, vast deserts, and overall, they do not have access to the open sea. Uzbekistan, for example, is a doubly landlocked country, meaning that not only is it landlocked, but so are all the surrounding countries. The region's primary sources of freshwater are the rivers that originate in the eastern highlands, which have been heavily utilized for irrigation purposes.