Read the following lyrics:
"The clock on the wall ticks slow and steady, but my heart races, always ready.
For a moment I've been chasing, a dream I keep embracing.
Time is a river, and I'm a leaf, carried onward, past joy and grief."
In the line "Time is a river, and I'm a leaf," what does the leaf primarily symbolize?
A) The beauty of nature
B) The fragility of life
C) The passive acceptance of fate
D) The strength of personal will
E) The changing seasons