The first time i rode a roller coaster, i was nine years old. i remember feeling both terrified and excited. i had goosebumps, and the hairs on my arms were standing straight up. my sister and i waited in line for an hour, which only made me more nervous.

which sentence is the best example of a vivid sensory detail?

i'd say the third sentence.

'i had goosebumps, and the hairs on my arms were standing straight up'

that has the most imagery.