Spanish is spoken by about 400 million people. It is spoken from Madrid to Manila to Mexico City. It may seem impossible to set rules of grammar for a language that is spoken so widely. However, a group of experts has attempted to do so. The Spanish Royal Academy has published its first collection of Spanish grammar rules in nearly 80 years. The book has nearly 4,000 pages. It addresses all of the variations in pronunciation, vocabulary, and sentence structure. It will replace the 1931 edition.
The language is ________.
A formal
B repetitious
C sincere
D complex
The correct answer is D complex.
Explanation: The passage discusses the wide range of variations in pronunciation, vocabulary, and sentence structure due to the expansive use of Spanish across different countries. This diversity indicates that the language has a complex structure that can be challenging to define with consistent grammatical rules.