Students in an eighth-grade class are studying the Civil War in social studies. As part of this unit of study, they work together to create a semantic map of words associated with the Civil War, including words that they have recently learned (e. g., emancipation, habeas corpus). This activity is most likely to promote students' vocabulary development by a. showing them how context can be used to determine the meaning of new vocabulary. b. helping them to categorize, visualize, and remember new vocabulary. c. guiding them to discover the multiple meanings of new vocabulary. d. providing them with fun experiences using the new vocabulary.