Which demographic group is correctly matched with its issue? minorities - prayer in school married people with children - environmental legislation midwesterners - environmental legislation churchgoers - prayer in school

Churchgoers are correctly associated with "their issue". Prayer in school is generally something that churchgoers would prefer to protect and preserve.

Remember that this question, and probably whatever reading it's associated with, features quite an over-generalization, and boiling different demographic groups, such as minorities or churchgoers, down to their "issue" not only oversimplifies the priorities and beliefs of these groups, but also assumes that all people of a demographic group feel the same way about an issue. 

Answer is churchgoers- prayer in school