The tone established in the initial sentences conveys a sense of nervousness mixed with pride. Francine is feeling anxious yet acknowledges the significance of the moment, indicated by her wiping her palms and the pride of her parents.
The response that MOST CLOSELY matches this tone is:
C "Good morning," she said nervously, "I am honored to receive this award."
This response captures both her nervousness and the honor of receiving an award, aligning with the tone of the original excerpt.