¿qué método de protección implica paredes laterales verticales con puntales horizontales?\ncajones de…

Brief Explanations:

Trench boxes (Cajones de zanja) are structures with vertical side - walls and horizontal bracing (puntales horizontales) used for protection in excavation work. Inclination refers to sloping the sides of an excavation, benching creates stepped levels, and debris (escombros) is not a relevant protection method here.

Answer:

Cajones de zanja