Correct

履约

/ lǚyuē / 
Strokes

Definition

to keep a promise/to honor an agreement

Example

As a Verb

keep a promise, a pledge, an agreement, a contract, an appointment, etc; honour an agreement

1
Tāmen
他们
méiyǒu
没有
lǚyuē
履约
lìjí
立即
huánzhài
还债
  
。

They failed to fulfil their promise to repay the debt promptly.