Answer:
The correct answer is c) Thornstan, who is writing a book that will be sold in bookstores around the world.
Step-by-step explanation:
Producers are all people whose function is to create something; there are different types of producers that range from the film producer to the agricultural producer.
The producer is responsible for making a product and then sells it, sometimes with the help of someone else. For example, in the case of Thornstan, he is writing a book for which he becomes a producer since his book is the product, and this book will be sold all over the world with the help of bookstores and the publisher.
I hope this information can help you.