Read the passage.
with a slight smile on his face, Adrian told his mother he had gotten a part in the school play. He was both excited and nervous. He
pretended to be calm as he described the many weeks of rehearsals that would be required. But he couldn't help thinking ahead to the triumphant
moment when he would step out onto the stage on opening night.
which word is closest in meaning to "triumphant" as it is used in the passage?

1. encouraging
2. fortunate
3. prosperous
4. victorious