Demeter and Persephone
(b) Humankind suffered as a result as one individual's impulses because there was no food and no water and Demeter put herself before others.
(c) This myth suggests that an individual's actions can affect the whole community and not just that one individual.
Popo and Ixtla
(b) It is important to consider the needs of a community over the needs of an individual because a community can do a lot more then just an individual, and thinking about just yourself shows an act of selfishness.
Sun and Moon in a box
(b) Eagle bears more blame for losing the Sun and the Moon in a box, because he gave the box to Coyote and Coyote ran off letting the Sun and the Moon out, after that Eagle felt terrible, blaming himself for making it winter.
(c) This folktale implies about the community and individual is to be careful and aware of who you can trust. Eagle messed up by giving the Sun and the Moon to Coyote because Eagle knew that he couldn't trust Coyote, and ended up giving it to the untrustworthy Coyote.