Which sentence shows detail that is interesting, adds color, and supports the topic of a personal narrative about packing to travel through europe over the summer?

a. down the long, dark stone hallway i walk, studying the etched, weathered stones beneath my feet, wondering about the reclusive monks who had built this so many years ago.
b. the scuffed leather boots seemed to tell their own story, with their softly fraying shoelaces and rounded, smooth heels.
c. i rolled up one more faded t-shirt and stuffed it into the corner of my bulging green knapsack, and i wondered anxiously if i had forgotten anything important.
d. i hear my phone's distinctive tones as emma texts me once again with the urgent message, “call me—have to talk to you stat.”