Because some target bacterial species are out-competed by others during growth on media, it is sometimes necessary to inhibit the growth of the competitors. what type of medium is specialized for this scenario?

Selective media are the most appropriate when these species are being used. This type of medium supports the growth of one type of organism, but it typically inhibits the growth of any other type. This way, the type being studied has an advantage that will allow it to be more easily studied.