The fact that Stephen Blackpool must remain in an unhappy marriage while Mr. Bounderby can easily end his marriage to Louisa highlights

a-the criticism of the many churches in Coketown

b-Blackpool's tendency to make bad decisions

c-Bounderby's tendency to quit when life gets difficult

d-the inequality between the rich and the poor in this society

D: - the inequality between the rich and the poor in this society

Explanation:

The poor cannot easily cancel a marriage that has already been arranged. Some don't even choose who to marry! On the other hand, the rich have vast choice of marriage and can easily find many options due to inheritance of money from marriage. Many women would gladly marry Mr. Bounderby.