Read the sentences from the sections "Changing The Tone Of Your Voice" and "Hearing Tone Of Your Voice Can Alter Your Mood." What participants didn't know is that the pitch of the voice they were hearing in their headphones was actually slightly modified. Instead, the participants in this study ended up changing their feelings to match what they had heard. The two sentences develop the significance of the study by

A outlining a cause and an effect of the tone the participants heard.

B describing a problem participants encountered and a solution.

C presenting a contrast between what scientists expected and learned.

D illustrating how the results participants felt changed over time.

The story line remains the same. the kids live in what was then one of the remaining beachfront slums, down the coast from the expensive malibu area. the beach was ruled by surfers, but in the afternoon, when the waves died down, some of the surfers, or their younger brothers, fooled around on skateboards. one day, skip engblom, the shop owner, comes up with a key breakthrough, polyurethane wheels: "they grip." with the additional traction, the z-boys try skating the sides of the big, open drainage canal that runs through the area. then comes a brainstorm: because of a drought, the area's swimming pools were drained. the kids started "borrowing" pools when the owners weren't home, to skate the curved sides.” where did “the lords of dogtown” originally practice their tricks? a. the beach c. an open drainage canal b. empty pools d. none of these