B. ITS.
Each of the library books is placed in its correct location.
its refers to each of the library books.
A personal pronoun is a pronoun primarily associated with a particular grammatical person. It may refer to people, object, or animals.
The grammatical person may be first person, second person, or third person.
The personal pronoun "its" denotes the use of third person in a singular form.
Until the end of the Seven Years' War in 1763, few colonists in British North America objected to their place in the British Empire. Colonists in British America reaped many benefits from the British imperial system and bore few costs for those benefits. Indeed, until the early 1760s, the British mostly left their American colonies alone. The Seven Years' War (known in the United States as the French and Indian War) changed everything. Although Britain eventually achieved victory over France and its allies, victory had come at great cost. A staggering war debt influenced many British policies over the next decade. Attempts to raise money by reforming colonial administration, enforcing tax laws, and placing troops in America led directly to conflict with colonists. By the mid-1770s, relations between Americans and the British administration had become strained
B because the quotes need to go on the outside of the ! .
