The response of an effector is:
to relate the change to the integrating center via the afferent pathway
to cause the environmental stimulus
to counteract the original stimulus that triggered the series of events
to transmit an output in response to the total afferent input

to transmit an output in response to the total afferent input

Explanation:

An effector refers to parts of the body generates response. An effector responds to transmit an output in response to the total afferent input  Stimulus in the body are detected by the receptor which send signals to the central nervous system via sensory neuron where interpretation and a response is coordinated by the brain. The response is sent to the effector through the motor neuron.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck