Step 1: Understanding Fidelity
Fidelity refers to the faithfulness with which a system reproduces the input at the output.
In communication systems, high fidelity means minimal distortion of the transmitted signal during its reception.
Step 2: Evaluating the Options
Sensitivity: Measures the minimum input signal required to produce an output.
Selectivity: Measures the ability to reject unwanted frequencies.
Resolution: More relevant to measuring instruments, not signal reproduction.
Hence, fidelity is the correct term to describe the receiver’s ability to replicate the original signal accurately.