Superheroes are fictional characters with 1) ________ powers who use their powers to fight crime and protect the public. Some popular superheroes include Superman, Batman, Spider-Man and Wonder Woman. Superheroes often have backstories that 2) ________ how they have gained their powers, 3) ________ being born with special powers, being bitten by a radioactive spider or being exposed to cosmic radiation. They usually have a specific outfit or clothing that they wear to hide their identity and protect 4) ________ while fighting crime. Superheroes have been a staple of popular culture 5) ________ decades, appearing in comics, movies, television shows, and video games.

Select the most appropriate option to fill in blank no. 1.

The correct answer is extraordinary.

Explanation:
The given passage discusses fictional superheroes and their special abilities used to fight crime and protect the public. Let's analyze the meaning of the options in the context of blank 1:

1. extraordinary: Very unusual, remarkable, or beyond what is ordinary. Superhero abilities (such as super strength, flying, or laser vision) exceed normal human capabilities, so "extraordinary powers" is the most contextually and grammatically appropriate phrase.
2. pragmatic: Dealing with things sensibly and realistically; practical. This does not describe powers or abilities.
3. hereditary: Transmitted genetically from parent to offspring. As noted in the passage, superhero powers can originate from radioactive bites or cosmic rays, not just genetic inheritance.
4. familiar: Well known or common/ordinary. Superhero powers are rare and supernatural, not familiar or ordinary.

Therefore, extraordinary is the most suitable word to fill in blank no. 1.