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Which outcome occurs when multipath propagation severely distorts a received radio signal?

A)Increased bit error rate
B)Improved signal-to-noise ratio
C)Enhanced frequency selectivity
D)Reduced channel interference

💡 Explanation

Multipath propagation causes signal fading and inter-symbol interference due to varied arrival times; the **Doppler Effect** creates phase shifts because copies of the signal destructively combine. Therefore, bit error rate rises, rather than signal quality improves, due to data overlaps.

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