HSK C4
Correct

阻

/ zǔ / 
Strokes

Definition

to hinder/to block/to obstruct

Example

As a Verb
hinder; block; obstruct
1
Tōngxíng
通行
wúzǔ
无阻

untrammeled/thorough passage

2
Gōngzuò
工作
shòuzǔ
受阻

be impeded in one's work