One argument against a multi-party system is the
- encouragement of opposition and instability
- banning of interest groups
- inability to attract foreign assistance
-
high cost of conducting elections.
The correct answer is: D
Explanation
One argument against a mult-party system is the high cost of conducting election. It is very expensive in both men and materials.
It should be noted that encouragement of opposition and instability is also correct. The unhealthy rivalry, frequent political re-alignment and coalition make government of a country to be weak and unstable.