Final answer:
A supporter of the Supreme Court's decision in Engel v. Vitale would argue that the prayer should not be recited in public schools as it violates the Establishment Clause. The Court ruled that the prayer constituted an endorsement of religion by the government, setting a clear boundary between government and religious practices in public institutions. The decision remains controversial and sparks ongoing debate.
Step-by-step explanation:
A supporter of the Supreme Court's decision in Engel v. Vitale would most likely make the statement that the prayer should not be recited in public schools because it violates the Establishment Clause of the First Amendment. The Court ruled that the prayer, even though it was nondenominational and voluntary, still constituted an endorsement of religion by the government, which is prohibited by the Constitution. This landmark case established a clear boundary between government and religious practices in public institutions. Despite the passage of time, the decision remains controversial and generates debate on both sides.