Members of the studio audience indicate their choices using an audience response system (having twenty seconds to do so, though many televised versions edit out most of the time).
Since there would be no way to edit out mistakes and exaggerations, the actors were asked to keep improvisation to a minimum, and avoid at all costs curse words.
Although the house itself was fairly old and run-down, it was surrounded by opulent houses in an upmarket street which the producers had to carefully edit out.
Retailers can actively edit out choices by not stocking products that they, or the state, consider to have an unacceptable environmental impact, thus being unsustainable options.