In a bicameral legislature, the legislators (law-makers) are divided into two chambers (camera means chamber in latin), so that each law can be voted on and checked twice. In a bicameral system the laws need aproval of over half of each chambers (but sometimes a two-thirds majority of one of the chambers can overrule the other chamber's lack of approval).
Answer:
The answer would be D. Members of the minority group had lower incomes
