Final answer:
Option b is the true statement about religious affiliation in the United States. While the country was founded upon Judeo-Christian principles, the religious landscape has diversified over time.
Step-by-step explanation:
Of the statements given, option b is the true statement about religious affiliation in the United States. The United States was indeed founded upon Judeo-Christian principles, but the religious landscape of the country has diversified over time. While it is no longer true that 90 percent of Americans identify as Protestant, Catholic, or Jewish, religious affiliation in the country remains complex, with congregations of various major and minor religions found across the country, reflecting immigration and migration history as well as other aspects of American history.