Which statement describes nephelometry?

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Nephelometry focuses on measuring light that is scattered by particles in a turbid solution. When particles are present, they scatter the incoming light in various directions, and a nephelometer detects the light intensity at a specific angle. The amount of scattered light correlates with the concentration of scatterers, making it useful for quantifying suspended particles or immune complexes. This is different from measuring transmitted light (which would be a measure of how much light passes through), absorbance (which tracks how much light is absorbed), or fluorescence emission (which requires a substance to emit light after excitation).