These diagrams represent the three types of tectonic plate boundaries.

Answer:
The correct answer is C. A
Explanation:
Volcanoes are more likely to form at convergent and divergent boundaries. Option C is a transform boundary.
Definitions:
Convergent boundary: When tectonic plates move toward each other.
Divergent boundary: When tectonic plates move away from each other.
Transform boundary: When tectonic plates slide past each other.
Volcanoes are least likely to form a volcano, therefore, C is the correct option.
I learned this is school, so this should be correct. Hope this helps! :)