Final answer:
The subject of this question is Arts, and the technique being described is b. shot continuity. Shot continuity refers to the smooth connection of shots within a scene for continuous action.
Step-by-step explanation:
The subject of this question is Arts. 
 
The technique being described is b. shot continuity. Shot continuity refers to the smooth connection of shots within a scene to maintain the viewer's orientation and create the illusion of continuous action. 
This is achieved through match cuts, where the visual elements in the shots are matched to create a seamless transition. Shot continuity is important in classical film style to enhance dramatic emphasis.