<span>
Prior restraint
Hope I helped :) </span>
B. population of the region
Accidentally pulls the fire alarm and holds the trigger down in the hall
I believe the answer is: positron emission tomography
positron emission tomography refers to a medical technology that is used to provide functional imaging on parts of our body. This technology probably more known as PET-scan. When we use this to provide imaging to human's brain, we can observe several part of the brain would light up during a certain activity due to heat.
Wouldn't it be a machine? I don't think there is a direct name for it.