Answer:
The tectonic plates that are involved in the activity at the Dominican Republic are the Caribbean plate and North American plate.
Step-by-step explanation:
The Dominican Republic is located on the island of Hispaniola, or rather on about half of its territory. This country, along its coastline, has the misfortune to be part of a plate boundary. The plate boundary is queastion is between the smaller Caribbean plate and the large North American plate.
The plate boundary between these two plates, at and near the territory of the Dominican Republic is a transform plate boundary. Practially, the two plates, in this area, are sliding past each other. Because of the tension that is constantly high along the plate boundary the cracking and adjustment of crust is very common. This leads to high scale earthquake activity, which has often resulted in huge material damages but also in loss of human lives in the Dominican Republic.