Final answer:
Wednesday belongs to the god Odin in Norse mythology.
Step-by-step explanation:
According to Greek mythology, Wednesday belongs to the god Odin. Odin is not one of the twelve Olympian gods, but rather a god in Norse mythology. The days of the week in English are named after various gods, and Wednesday is named after Odin. The other options listed in the question belong to the Greek pantheon of gods and do not specifically govern Wednesday.