Dionne competes on her high school's track team. she always feels naturally nervous right before a race. she also noticed that, on days when she is not racing, just seeing the track still made her feel nervous. her nervousness at seeing the track on non-race days is a(n):

Unconditioned response.

Explanation:

An unconditioned response is one that doesn´t require any type of prior learning or training because it happens naturally as a reply to an unconditioned stimulus. Dionne´s nervousness when seeing the track on non-race days is a natural and automatic response, an unlearned response such as the feeling of hunger we get when we feel the smell of food.