The main idea of the passage is B. The development of English.
<h3>What is central idea?</h3>
It should be noted that the central idea simply the main idea that's conveyed by the author on a literary work.
In this case, English has grown from a language of few speakers to become the dominant language of international communication.
It was stated that English as we know it today emerged around 1350, after having incorporated many elements of French that were introduced following the Norman invasion of 1066.
Furthermore, during the course of the next two centuries, English began to spread around the globe as a result of exploration, trade including slave trade, colonization, and missionary work.
English speakers became established and grew in various parts of the world and as the communities developed, English gradually became the primary language of international business, banking, etc.
Therefore, the correct option is B.
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