Read the excerpt from Between the Silver and the Ash. They sit in silence. The sound of the brook gets louder. Suddenly, XAVIER jumps up and runs to the back of the stage between the trees.

XAVIER

The joyous sounds of spring. The joyous sounds of the spring. The spring!

KENNETH

(Jumping up) Where rocks and pebbles sing. The water going over the rocks and pebbles. And you can't get to it in wintertime because the spring is frozen then.

XAVIER

(From behind the trees) The treasure is in the spring, between the ash tree and the silver beech.

Which detail from the setting best advances the action of the scene?

sit in silence
brook gets louder
back of the stage
from behind the trees