Question

1. which scenario would most likely require complex extrication techniques?

house fire
industrial accident
motor vehicle collision
trench collapse incident

Explanation:

A trench collapse incident involves complex structural and soil - related factors, requiring specialized and complex extrication techniques to safely rescue victims. House fires, motor vehicle collisions, and industrial accidents generally have more straightforward extrication needs compared to trench collapses, where the unstable earth and potential for further collapse make extrication highly complex.

Answer:

Trench collapse incident