Which 1551 church council, named after the number of its canons, standardised Orthodox liturgy, iconography, and clergy discipline during the reign of Ivan IV?

• A The Stoglavy Synod ✓
• B The Council of Florence
• C The Moscow Sobor of 1666
• D The Synod of Jerusalem

The Stoglavy Synod (Hundred Chapters Council) of 1551 codified a hundred decrees (stoglav) covering everything from the two-fingered sign of the cross to prohibitions on shaving beards.