![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
What is the purpose in writing this text?
A.
Telling people how serious the damage caused by landslides is.
B.
Telling people that sending workers to stabilize mountainsides is a risky job.
C.
Introducing a product that can be used to stabilize mountainsides.
D.
Showing people how to use a new product.