Read this scenario: When Tim stepped onto the deserted campsite, the
campfire was a mere glow of coals. The picnic table sat in
disarray, covered by melted marshmallows and chocolate,
empty drink cans, and half-eaten hot dogs. The sounds of
water splashing and laughter echoed in the distance; Tim's
friends had gone for a late-night swim. Tim could see
flashlight beams bouncing on the water's surface. / guess
/Il have to be the "grown-up," he muttered to himself. With
an abrupt snap, Tim opened the garbage bag and began
cleaning up after his friends.
Which descriptive phrase from the scenario best represents irritation?