The increasing value constituents have placed on descriptive representation in congress has had the effect of
increasing the sensitivity representatives have to their constituents demands
decreasing the rate at which incumbents are elected
increasing the number of minority members in congress
decreasing the number of majority minority districts

increasing the number of minority members in Congress

Explanation:

Minority groups are groups with less influence in the congress, these groups tend to increase when the constituents allow a larger value the descriptive representation of the congress. In this way minority members can be more participative and have a higher level of influence. This becomes attractive and influences the increase in the number of minority groups.