Mallam's Tea shop is a a story about a tea stall owner who suffers from dwarfism,and poor eyesight,and the ability to only speak a smattering of the local dialect in Zongo Street. These words show the liveliness or the feeling of happiness in the story:
He drew in a deep breath, and began to pray in his heart. He smiled and thanked Allahu-Raheemu, the Merciful One, for curing the streetfolk of the prejudice they had nursed against him for so long.
It is not merely a topic. It often reflects an opinion or judgment that a writer has made about a reading or personal experience.
"Breaking with tradition" is a major theme of modernist literature. Therefore, the correct answer is the second one -- it emphasizes the changing values of the time.
In this case, the changing values involve women's appearance. For centuries, women had long hair. A woman with very short hair was never seen. In the story, though, short hair is becoming the fashion.
The answer is B. It reveals the author’s hatred for exaggeration by developing a critical tone.