What is meant by the basic principle popular sovereigntya. the government is set up as a constitutional republicb. the people have the right to alter their governmentc. congress has the right to regulate traded. the president has the right to veto any bill that congress has passed

Popular sovereignty has to do with the people choosing who they want to lead the government. It does not have to do with vetoing a bill or regulating trade. Therefore, C and D are eliminated. People don't have that big of a power to alter the government. It has to do with the government being set up as a constitutional republic, because the people have the right to choose their leaders and who represents them. The answer is A.

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