How did the Bolsheviks view old rules related to marriage and family?

Correct answer: Social rules that could be changed

The direct answer is A: social rules that could be changed. The Bolsheviks believed that marriage and family relations were not permanently fixed by religion, monarchy, or old custom. They wanted society to become more equal, so they introduced social reforms and treated many old arrangements as changeable human rules. Option A is correct because it describes this reform-minded view. Option B is wrong because the Bolsheviks opposed the permanent authority of the Tsar and monarchy. Option C is wrong because these were not simply foreign laws. Option D is wrong because Church-tax rules were not the main meaning of the question. Remember: after the revolution, old social customs were examined and changed, not automatically obeyed.