Correct

降级

/ jiàngjí / 
Strokes

Definition

to demote/to relegate/to degrade

Example

As a Verb

reduce to a lower rank; downgrade; demote; relegate

1
Jiàngjí
降级
liúyòng
留用

degrade/downgrade in rank but retain in office

As a Verb

send (a student) to a lower grade; repeat a school year

2
Tā
他
yīn
因
kǎoshì
考试
bù
不
jígé
及格
bèi
被
jiàngjí
降级
  
。

He was sent to a lower grade for his failure in the examination.

As a Verb

relegate (a football team to a lower ranking division)

3
Miànlín
面临
jiàngjí
降级
wēixiǎn
危险
de
的
qiúduì
球队

team threatened with relegation

4
Jiàngjí
降级
jùlèbù
俱乐部
  
/
qiúduì
球队

relegated club/team