A rock band flashes a number on the jumbo screen at one of their concerts. The lead singer asks everyone to call the number to express their concern over unpaid royalties of music played over the Internet. fans call that number.

VOLUNTARY RESPONSE

Explanation: Voluntary response is a deliberate response or feedback given by an organism to an external stimuli or external factor. It sometimes require a complex coordination of impulses which can excite or inhibit a response from an organism with feedback from visual, motor, and other systems. The response by the Fans of the Rock singers is a VOLUNTARY RESPONSE, to the Stimulus of facilitated by the Lead singer.

the painting entitled "the old testament" is an example of middle byzantine art

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