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.

A "dwarf" typically refers to something that is smaller than usual, and the opposite or antonym of this would be "Giant," which denotes something much larger or bigger. Therefore, option (D) Giant is the most suitable antonym in this context.

"Alleviate" means to make something more bearable or less severe, while "Aggravate" means to make something worse or more intense. Therefore, option (C) Aggravate is the most suitable antonym in this context.

"Exodus" refers to a mass departure or exit of people, often used to describe a large group leaving a place. The antonym, "Homecoming," signifies a return or arrival back to one's home or place of origin. Therefore, "Homecoming" is the opposite of "Exodus" as it involves people coming back home rather than leaving.