Concept:Islam discourages acts that are lawful but disliked when done without a serious need.
Explanation:Bigamy and polygamy are not categorically discouraged in Islam.
A man is allowed to marry up to four wives only if he can treat them all with justice.
If he fears that he cannot be fair, Islam directs him to marry one wife.
Thus, monogamy is not discouraged at all.
Divorce, however, is treated differently.
Although divorce is lawful, Islam strongly dislikes it.
According to a saying of the Prophet, divorce is the most detestable lawful thing before Allah.
It is permitted only as a last resort when the marriage cannot survive.
So, among the listed options, divorce is the practice discouraged by Islam.
Answer:B. Divorce