The correct answer is: B. no article, an
French is an easy language to learn.
The article “a” or “an” is used before singular nouns that refer to something that is not specific. In this case, the speaker is not referring to a specific language, but rather to the general concept of French. Therefore, the article “a” or “an” is not necessary.
The article “the” is used before singular nouns that refer to something that is specific. In this case, the speaker is not referring to a specific language, but rather to the general concept of French. Therefore, the article “the” is not necessary.