Which is the largest and highest plateau in the world?

a) Qinghai Hoh Xil Plateau 

b) Colorado Plateau

c) Laurentian Plateau

d) Brazilian Highland

Qinghai Hoh Xil Plateau in Tibet is the largest and highest plateau in the world. This plateau covers an area of about 2500000 square kilometer and it is situated at about 4500 meter above sea level.