Read the map.

A map titled Physical Features of East Asia. A key shows Lowlands in green, Highlands in yellow, and mountains with brown triangles. China is surrounded by the following countries: India, Pakistan, Afghanistan, Kazakhstan, Mongolia, North Korea, South Korea, Laos, Thailand,and Bangladesh. The Huang He River is to the north and the Yangtze River is to the south in central China; the Yellow Sea, East China Sea, and South China Sea are to the east. The Himalayas are to the south and southeast. The map has labels 1 through 4. 1 is in the highland region north of central China. 2 is in southern Mongolia. 3 is in the far north of China. 4 is in central China.

Which number on the map shows the Gobi Desert?

1
2
3
4