The hyphen in self-sealing is used because?

It denotes a single word and not two as it seems to be.

Explanation:

A hyphen (-) is used to show a joined word or more than one words joined together to make a single word. These new formed words have a combined meaning in its usage and will stand for a single word.

So, with the use of the hyphen (-) in "self-sealing" denotes that the word stands for a single word. When used separately, "self" and "sealing" stand for different meanings, self is oneself and sealing means the ability to join together. But when taken together as a single word "self-sealing", it means that the "'object or thing' is capable of sealing itself without the need of any other thing.

situational archetype describes the adventures of hero. the examples of situational archetypes are the quest, good vs evil, the task which represent respectively search, good forces, characters vs the evil ones and a certain job that must be done. from the given options, we cannot observe the subplot the beauty and the beast which is a correct answer for this question.