Rather, the intensity of adult support depends on where the task falls within the child's  zone. 
( Rather ( , ( ( ( the intensity ) ( of ( adult support ) ) ) ( ( depends ( on ( where ( ( the task ) ( falls ( within ( ( the ( child 's ) ) zone ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Rather)) (, ,) (NP (NP (DT the) (NN intensity)) (PP (IN of) (NP (JJ adult) (NN support)))) (VP (VBZ depends) (PP (IN on) (SBAR (WHADVP (WRB where)) (S (NP (DT the) (NN task)) (VP (VBZ falls) (PP (IN within) (NP (NP (DT the) (NN child) (POS 's)) (NN zone)))))))) (. .)))
Adult support the child depends on the situation.
( Adult ( ( support ( ( the child ) ( depends ( on ( the situation ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Adult)) (VP (VBP support) (SBAR (S (NP (DT the) (NN child)) (VP (VBZ depends) (PP (IN on) (NP (DT the) (NN situation))))))) (. .)))