A. When you decorate your bedroom with the same things is the correct answer. A theme is when everything in a bedroom, all the rides in a park (a.k.a. theme park), or what a paper you write is about. For example, a room could have a "forest" theme if there are trees painted on the walls, the furiture is bare wood, and the top planjet on the bed is camoflage. Another example is if there are cobwebs, fake spiders, and jack o' lanterns at a dance. The theme would be a halloween theme.