Final answer:
The official term for modern witchcraft among witches in England is Wicca, a neo-pagan religion focusing on the worship of a goddess and a god and the celebration of nature.
Step-by-step explanation:
According to Winzeler, the "official" inside term for modern witchcraft among modern witches in England is D. Wicca. Wicca, a neo-pagan religion with its roots in ancient pagan beliefs and rituals, emphasizes the worship of both a goddess and a god, represents elements with its pentagram symbol, and involves rituals such as casting a circle. The practice of Wicca is not to be confused with witchcraft, sorcery, or other spiritual practices, as Wicca is a distinct modern polytheistic religious movement with a strong emphasis on nature and duality.