Final answer:
Chow and his mother were likely still unhappy because they were habitual complainers, inherently dissatisfied with life, rather than because of specific circumstances involving Ty. Therefore correct option is B
Step-by-step explanation:
The narrative presents the stepmother and Chow as unsatisfied with Ty's success because their dissatisfaction seems deeply ingrained. Their unhappiness is likely attributed to their nature; they appear to be the type of complainers who would never be content regardless of their circumstances. Instead of feeling joy for Ty's good fortune, they remain in disbelief, suggesting a pessimistic or envious outlook that prevents them from experiencing happiness, even when the source of their previous discontent, Ty, is no longer present.