(b) Why did Hari Singh return to Anil?
Hari Singh returned to Anil because he realized that by stealing money he had only gained temporary wealth but lost the opportunity to become an educated and respectable person. He understood that Anil's trust and teachings were more valuable than money. The desire to reform and lead an honest life brought him back.
Alternate answer if (a) is chosen:
(a) How did Matilda look when she took part in the ball?
Matilda looked stunningly beautiful and elegant at the ball. She was the center of attraction among all guests. She danced with grace and enthusiasm, feeling triumphant and admired. For the first time in her life, she felt successful and belonged to the world of luxury she always dreamed of.