Why Does the Effectiveness of the Supreme Court Depend on Delegation

Why does the effectiveness of the Supreme Court depend on delegation?

A) As agents for the legislative and executive branches, the Court wants to minimize hidden action.
B) The Court depends heavily on the executive and legislative branches to enforce its opinions.
C) The Court must persuade the lower federal judiciary, by the strength of its opinions, to implement its policies.
D) The Constitution gives the Supreme Court exclusive control over judicial policy and the Court wants to avoid congressional hearings or constitutional amendments.