Which 19th-century religious movement, founded by Ellen G. White, observes Saturday as the Sabbath and emphasises health, education, and a vegetarian lifestyle?

• A Church of God (Seventh Day)
• B Worldwide Church of God
• C United Church of God
• D Seventh-day Adventist Church ✓

Seventh-day Adventists operate one of the largest Protestant educational and healthcare systems in the world, and their studies on longevity in Loma Linda, California, are part of the 'Blue Zones' research.