It would be B. The Alps. The Alps one of the only mountain ranges in the world tall enough to be classified as "Highland climate," and certainly the only one big enough out of the list mentioned to be classified that way.
The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.
B. Indicate the map’s purpose
