Which kind of adjective is used most frequently in ordinary speech or writing?

A. Proper
B. Common
C. Article
D. Demonstrative

Is it B?

I think you're right, but we also use the three articles frequently. Please check your text.

To determine which kind of adjective is used most frequently in ordinary speech or writing, you can analyze the context and typical usage patterns.

In this case, the most commonly used type of adjective in ordinary speech or writing is the common adjective. Common adjectives are used to describe general qualities of people or things, such as size, color, shape, or appearance. They are used to provide more details about nouns and are found in everyday conversation.

Proper adjectives, on the other hand, are derived from proper nouns and are used to describe specific people, places, or things. They are typically capitalized and refer to a particular entity.

Article adjectives (a, an, the) and demonstrative adjectives (this, that, these, those) are also commonly used in speech and writing, but they serve different functions. Articles are used to specify or identify something, while demonstrative adjectives point to a specific noun or group of nouns.

Therefore, the correct answer to your question is B. Common.