Final answer:
In 'Stage One: Departure' of the Monomyth, the mentor is depicted as a helpful guide, whereas the threshold guardian presents challenges, with the mentor's support being vital for the hero's success. The correct option is The hero's mentor is almost always helpful while the threshold guardian is an evil force that challenges the hero.
Step-by-step explanation:
The statement best supported by the section 'Stage One: Departure' in the context of the Monomyth's hero's journey is that the hero's mentor is almost always helpful while the threshold guardian is usually a less trustworthy guide. The mentor often provides the hero with knowledge, skills, and guidance critical to their journey, representing a beneficial influence, while the threshold guardian serves as an obstacle or challenge that the hero must overcome, providing a test to the hero's abilities and dedication to their quest.
The mentor can sometimes be seen as a father figure, providing care and provision to the hero, and their presence significantly contributes to the hero's likelihood of success.