From Purdue Owl, a descriptive essay is a genre that asks students to describe something it can be an object, person, place, experience, emotion, situation, etc. To put in a simpler way to understand, the descriptive essay or genre same thing encourages student's ability to write about a essay length of one's experience.
Therefore, the correct answer is C. what I experienced during a visit to an apple orchard, because you are writing an event that's in first person, where you talk about your own experience of that event to the apple orchard.
Hope it helps. ^^
