Which of the following nouns is considered countable?

The noun "bed" is considered countable because it refers to a specific item that can be individually counted. Countable nouns can be singular or plural, and they can take a determiner that indicates quantity, such as "one bed," "two beds," etc.

In contrast, the other options—information, advice, and progress—are classified as uncountable nouns. These nouns refer to concepts or substances that cannot be counted individually. For instance, "information" denotes a collection of data and cannot be separated into individual items (we say "some information," not "two informations"). Similarly, "advice" represents guidance that is not quantified in single units, and "progress" refers to movement or development which also cannot be divided into distinct counts. Understanding the distinction between countable and uncountable nouns is essential in English, especially when it comes to using articles and quantifiers appropriately.