Answer:
The correct answers are A, C and D. The modern-day nation of Mongolia is landlocked; it is located in east Asia; and consists primarily of semiarid steppe and prairie.
Step-by-step explanation:
Mongolia is a country in Central and Eastern Asia. The country borders to the north with the Russian Federation, and to the south by China.
The country is located on the Mongolian plateau and has a continental climate with tundra and steppe areas in the north, mountainous area in the middle, and desert in the south.