In a hospital for the mentally ill, much of the nurse’s time is devoted to maintaining a safe environment for the patients and also helping them to understand and （） essential safety measures.

In a hospital for the mentally ill, much of the nurse’s time is devoted to maintaining a safe environment for the patients and also helping them to understand and （） essential safety measures.
A.take credit for
B.hand down
C.put into practice
D.blend in
正确答案：C