Correct

报国

/ bàoguó / 
Strokes

Definition

to dedicate oneself to the service of one's country

Example

As a Verb

do worthy deeds in the service of one's country; requite the country by dedicating oneself to its service

1
Yǐshēnbàoguó
以身报国

lay down one's life for one's country; sacrifice oneself for one's country

2
Bàoguówúmén
报国无门

have no opportunity to serve the country