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PreviousWhich of the following is the primary purpose of amplification in biosignal acquisition? (i) To reduce the signal-to-noise ratio (ii) To make the weak bioelectrical signals detectable and measurable (iii) To convert analog signals to digital signals (iv) To filter out unwanted frequenciesNextIn magnetic resonance imaging (MRI), which of the following is used to generate detailed images of soft tissues? (i) Ionizing radiation (ii) High-frequency sound waves (iii) Magnetic fields & radio waves (iv) Gamma rays