In the context of the sentence, "liberal" is used to describe policies that are open to change and progress. The opposite or antonym of "liberal" in this context is "conservative," which implies a preference for maintaining existing traditions and resisting change. Therefore, option (B) conservative is the most appropriate antonym.

The most appropriate antonym for "rebellion" is "loyalty." Rebellion involves resisting or opposing authority, while loyalty implies faithfulness and allegiance to a person, group, or cause. The other options— "uprising" (an act of resistance or rebellion), "sedition" (incitement to rebellion), and "allotment" (the action of allotting or assigning something)— are either synonyms or closely related to the concept of rebellion.

"Casual" refers to something relaxed, informal, or not strict. The antonym "Formal" denotes something that is official, structured, or follows established conventions. Therefore, option (C) Formal is the opposite or antonym of "Casual."

In the context of the sentence, "malice" refers to a desire to cause harm or suffering to others. The opposite or antonym of malice is a positive quality like "grace," which typically conveys kindness, elegance, and goodwill. Therefore, option (B) grace is the most appropriate antonym in this context.