State Supreme Courts Can Turn to Their State Constitutions to "Raise

State supreme courts can turn to their state constitutions to "raise the ceiling of liberty above the floor created by the federal Bill of Rights". When would state supreme courts do this?

A) When the state supreme court is more conservative than the U.S. Supreme Court
B) When the state supreme court is unsure of what to do
C) When the state supreme justices totally agrees with the U.S. Supreme Court
D) When the state supreme court is more liberal than the U.S. Supreme Court
E) When the state supreme court is worried they'll be overruled by the U.S. Supreme Court