单项选择题

D
Texas was the biggest state before Alaska became the forty ninth state in 1959. One good way to understand the size of Texas is to learn about its weather. Different parts of the state have different kinds of weather.
Laredo, Texas, is one of the hottest cities in the United States in summer. The best time to visit Laredo is in the winter when it is pleasantly warm.
Amarillo gets very cold in winter. There is sometimes more snow in Amarillo than in New York, which is a northern city. Summers are better, but sometimes it gets quite hot. The best time to visit Amarillo is in the autumn when it is cool.
If anyone asks you about the weather in Texas, ask him, "What part of Texas do you mean\
According to the passage, Texas probably is ______.

A.in the south of America
B.on the south of America
C.to the north of America
D.to the south of America