Final answer:
The best meaning of "complicity" as it is used in the passage is collaboration. Complicity refers to the involvement or participation in a wrongful or illegal act. In this case, Snowball is being accused of collaborating or working together with Jones, the previous human owner of the farm.
Step-by-step explanation:
The best meaning of "complicity" as it is used in the passage is A. collaboration. Complicity refers to the involvement or participation in a wrongful or illegal act. In this case, Snowball is being accused of collaborating or working together with Jones, the previous human owner of the farm. The passage suggests that Snowball had not only attempted to lose the Battle of the Cowshed, but was openly fighting on Jones's side.