The best interpretation of the phrase "a flame inside me" in the sentence is:
C. "Flame" is used as a metaphor to compare kindling a fire to the writer's desire to draw again.
In this context, "a flame inside me" symbolizes a passionate motivation or desire that has been reignited, indicating a strong emotional connection to the act of drawing. This metaphor suggests that, like a flame, the desire can grow and be nurtured over time.