Correct

内因

/ nèi yīn /
Strokes

Definition

internal cause

Example

As a Noun

internal cause/factor

1
Shì
事物
de
zhǎn
发展
gēnběn
根本
shàng
shì
yóu
nèi
yīn
juédìng
决定
de
  

The development of things depends fundamentally on internal causes.

2
Wàiyīn
外因
tōngguò
通过
nèiyīn
内因
zuòyòng
作用
  

External causes become operative through internal causes.