C is the best answer.
https://www.scribd.com/document/24997897/Police-Guide-to-Bomb-Search-Techniques-Frank-A-Moyer
A. By dividing the room into quadrants, then sweeping one quadrant at a time
B. By type of material : metal object are inspected first, then plastic, then all others
C. By height, starting below hip level then working upward, sweeping around the room at each level
D. By starting at one end of the roo , fanning out, and then proceeding until reaching the other end
I'm pretty sure it's C but I just want to make sure
https://www.scribd.com/document/24997897/Police-Guide-to-Bomb-Search-Techniques-Frank-A-Moyer
However, if we consider the most commonly recommended method, option D aligns more closely. When searching for a bomb or any potential threat, it is often advised to start at one end of the room and systematically move towards the other end, fanning out as you go. This method ensures thorough coverage and reduces the chances of missing any suspicious items.
It is vital to emphasize that bomb searches should only be conducted by trained professionals, such as bomb disposal experts or law enforcement personnel, to ensure safety.