What is line-level?
a.
the maximum strength that an audio signal can be
b.
the minimum strength that an audio signal needs to be recorded
c.
the amount of external cables needed to connect to a direct input box
d.
the level of soundproofing an isolation booth requires

The maximum strength that an audio signal can be used is line-level.

A. The maximum strength that an audio signal can be.

Explanation:

Line level can be defined as a specified level indicating the strength of an audio signal which transmits analog sound between audio components such as CD players, DVD players, television sets and many more. Usually utilized Voltage and Audio Levels.

A line input level electrical sign ordinarily has a voltage running from 0,3 to 2 Volts, while a receiver level sign is all the more frequently in the range from 5 to 50 mV (millivolts). Most video editors concur that the general sound degree of your sound blend (the entirety of your sound consolidated) ought to be standardized between - 10db to - 20db.