Final answer:
The huntsman advances the plot of 'Little Red Riding Hood' by saving Little Red Riding Hood and her grandmother from the wolf, demonstrating the story's cautionary theme.
Step-by-step explanation:
The huntsman's motivation in Little Red Riding Hood advances the plot through option c) By saving Little Red Riding Hood from the wolf. In the story, the huntsman comes to Little Red Riding Hood's rescue after she has been deceived and swallowed by the wolf. His motivation to save her propels the story to its climax and provides a resolution. The huntsman's actions not only save Little Red Riding Hood but also her grandmother, who was also eaten by the wolf. This turn of events leads to the wolf's defeat and underlines the folktale's cautionary theme about the dangers of trusting strangers.