Final answer:
A multiplexer with 32 inputs would require 5 control lines.
Step-by-step explanation:
A multiplexer, also known as a mux, is a digital circuit that selects one of many inputs and forwards it to a single output. The number of control lines required for a multiplexer is determined by the formula 2^n, where n is the number of inputs. In this case, the multiplexer has 32 inputs, so the number of control lines would be 5.