Answer:
Option A
Explanation:
Wedge issues are related to political issues that causes division in a particular group or party based on the fact that they have diverging point view.
The best option among the options listed that best explains a wedge issue is Option A " A wedge issue is a controversial matter that one party uses to split voters in the other party", due to their difference in understanding of a particular issue.
Operates when people conform to social norms for fear of negative social consequences
Sometimes people engage in trade in order to get what they need or to communicate.
