Main Idea of Childhood Memoir Excerpt

In the following excerpt from a fictional memoir, the author reflects on a specific moment in childhood:

"It was a summer afternoon, and the sun poured down like molten gold over the park. The scent of freshly cut grass mingled with the sweet aroma of blooming lilacs. A gentle breeze stirred the branches of the old oak tree under which I sat, engulfing me in a moment of tranquility that felt timeless. As I watched the other children playing, their laughter ringing in the air, I couldn’t help but feel a profound sense of freedom and joy, as if the world was full of infinite possibilities."

Which of the following best captures the main idea of this passage?