Read the passage.

Amir could not imagine a better day! He had woken up early and enjoyed a tasty breakfast. The sky was a bright blue, and the sun shone brightly. During algebra, Amir found out he had attained the highest score on last Friday’s quiz. Then, at track practice, he set a new personal best in the 100-meter dash.

Which word best describes the mood of this passage?

melancholic
joyful
respectful
casual