The aral sea was once fed by until most of the water was diverted by irrigation.

two large rivers

the caspian sea

canals

two large lakes

The correct option is TWO LARGE RIVERS.
The Aral lake was once the fourth largest lake int the world. It was fed by two large rivers: Amu Darya and Syr Darya rivers. Some even called the Aral lake a sea  because of its large size, but that was then, the lake has been drastically reduced in size now due to water diversion. 

The sun's parallax would be 180 degrees, greater than which you can't get.  so a. would be your anwser 

The answer is    d.  central highlands