Question 10 is based on the passage you have just heard.

10. What cause the volcano’s outer layers to wear away?

解析：B。本题目为细节题。问题为：什么导致火山外层的磨损？原文所在句：Devil’s Tower was then shaped by the slow, gentle work of wind and water. The outer layers of the volcano were worn away until the hard core stood completely exposed. 魔鬼塔随后被风和水逐渐风化，火山外层磨损，坚硬的内核完全暴漏在外面。选项B) Wind and water，与文中信息相一致。此题目干扰选项D) Fire and fury是火山形成的原因，问题问的是外层磨损的原因。此题目需要根据问题做选择。因此正确选项为B。