D. Decades before men walked on the moon
I would go with nature because thats what it sounds like to me hope this helps<span />
Yes, arcade is a common noun. A common noun is a person, place, or thing.
You need to adress a theme so that the audience knows how trajec it is. If you do not express or show a theme, it would be less dramatic. A drama is all about showing expression, scene, theme, costumes, etc.
Hope this helps! :)