The correct answer is C. play.
Grammar is the foundation of language. It is the set of rules that govern how words are put together to form sentences. Without grammar, language would be a chaotic mess of words with no meaning.
Grammar is important in later life for a number of reasons. First, it allows us to communicate effectively. When we use correct grammar, our sentences are clear and easy to understand. This is important in all areas of life, from school to work to personal relationships.
Second, grammar helps us to think clearly. When we use correct grammar, we are forced to think about the structure of our sentences and the meaning of our words. This can help us to better understand complex concepts and to communicate our ideas more effectively.
Finally, grammar is a sign of education and intelligence. When we use correct grammar, we make a good impression on others. This can help us in our careers and in our personal lives.
The other options are incorrect because they do not accurately describe the importance of grammar. Option A, figure, means to calculate or estimate. Option B, portray, means to represent something in a particular way. Option D, exercise, means to use or practice something.