. . . . . . . . gold of South Africa is exported to many countries. A. a B. an C. the D. no article

The correct answer is: no article.

The word “gold” is a common noun, which means it refers to a general class of things. Common nouns are not usually preceded by articles.

In this case, the word “gold” is referring to the general class of gold, not a specific piece of gold. Therefore, no article is needed.

Here are some other examples of common nouns that are not usually preceded by articles:

• water
• air
• food
• money
• time
• love
• life

However, there are some cases where a common noun can be preceded by an article. For example, if you are referring to a specific piece of gold, you would say “the gold.” You would also use an article if you are using the noun in a figurative sense. For example, you might say “I’m in love with gold.”