Final answer:
The Supreme Court's power demonstrated in Griswold v. Connecticut is based on the principle of judicial review, where the Court protected the implied constitutional right to privacy.
Step-by-step explanation:
The power of the Supreme Court demonstrated in the excerpt from the Supreme Court opinion in Griswold v. Connecticut (1965) is based on the principle of judicial review, which allows the Court to interpret the Constitution and nullify laws that they find violate the Constitution. In this case, the Supreme Court found that the Connecticut statute prohibiting the use of contraceptives violated the right to privacy, a liberty implied by the Constitution even though it is not explicitly stated. This right to privacy has since been a basis for overturning other laws and extending privacy protections in various contexts, such as in Roe v. Wade for abortion rights and Lawrence v. Texas concerning sexual relationships between consenting adults.