Answer: C. Imagery.
Step-by-step explanation: In literature and poetry, imagery is a literary device that consists in the use of descriptive or figurative language in order to create a picture in the reader's mind (it also can evoke the senses). The given excerpt is a clear example of imagery, because it is using the description of the sweet aroma of pastries floating through the air, to evoke the sense of smell and create a mental image.