Adisadvantage with a subject directory is that users sometimes have difficulty deciding which categories to choose as they work through the menus of links presented

The answer is True.  One disadvantage with the subject directory is that users sometimes have difficulty deciding which categories to choose as they work through the menus of links presented.  A subject Directory classifies web pages into categories, such as sports, shopping, etc.  One can locate a particular topic from general to the specific.