A company has developed a new sensing device that, according to the company's claims, detects weak, ultralow-frequency electromagnetic signals associated with a beating heart. These signals, which pass through almost any physical obstruction, are purportedly detected by the device even at significant distances. Therefore, if the company's claims are true, their device will radically improve emergency teams' ability to locate quickly people who are trapped within the wreckage of collapsed buildings.
Which of the following, if true, most strengthens the argument?
(A) People trapped within the wreckage of collapsed buildings usually have serious injuries that require prompt medical treatment.
(B) The device gives a distinctive reading when the signals it detects come from human beings rather than from any other living beings.
(C) Most people who have survived after being trapped in collapsed buildings were rescued within two hours of the building's collapse.
(D) Ultralow-frequency signals are not the only electromagnetic signals that can pass through almost any physical obstruction.
(E) Extensive training is required in order to operate the device effectively.
let’s identify the premises and the conclusion.
Premises
A company has developed a new sensing device that detects weak, ultralow-frequency electromagnetic signals associated with a beating heart.
These signals, which pass through almost any physical obstruction, are purportedly detected by the device even at significant distances.
Conclusion-
their device will radically improve emergency teams' ability to locate quickly people who are trapped within the wreckage of collapsed buildings.
(A) People trapped within the wreckage of collapsed buildings usually have serious injuries that require prompt medical treatment.
The conclusion says that the new device will radically improve emergency teams' ability to locate quickly people who are trapped within the wreckage of collapsed buildings. Option A neither strengthens nor weakens the conclusion. Eliminate
(B) The device gives a distinctive reading when the signals it detects come from human beings rather than from any other living beings.
This supports the conclusion that the device will help locate people who are trapped within the wreckage of collapsed buildings. Correct.
(C) Most people who have survived after being trapped in collapsed buildings were rescued within two hours of the building's collapse.
So? Irrelevant. Eliminate.
(D) Ultralow-frequency signals are not the only electromagnetic signals that can pass through almost any physical obstruction.
The conclusion is about the efficiency of the device in locating people who are trapped within collapsed buildings. Option D is irrelevant. Eliminate.
(E) Extensive training is required in order to operate the device effectively.
Option E focus on training and not the device. Eliminate.