Question

which component of a feedback mechanism determines the set point for variables?
sensor
target effector
afferent pathway
control center

Explanation:

In a feedback mechanism, the sensor detects the variable level and compares it to the set - point. It helps in determining the set - point for variables. The target effector acts on the variable, the afferent pathway transmits information to the control center, and the control center processes information but does not directly determine the set - point for variables.

Answer:

Sensor