The nervous system receives information from sense organs and analyzes that information.
a: central
b: peripheral

Peripheral. This connects to the central nervous system but detects signals from the sensory organs such as the eyes. 
        

I believe the correct answer from the choices listed above is option A. The central nervous system receives information from sense organs and analyzes that information. It is the complex of nerve tissues that controls the activities of the body. In vertebrates it comprises the brain and spinal cord. Hope this answers the question.

We know that

The residual value is the observed value minus the predicted value.

RESIDUAL VALUE=[OBSERVED VALUE-PREDICTED VALUE]

where

Predicted value.--> the predicted value given the current regression equation

Observed value. --> The observed value for the dependent variable.

 in this problem

predicted value  for x=3   approximate   y=3.6

observed value is for x=3  y=5

so

RESIDUAL VALUE=[5-3.6]> 1.4

the answer is

the best estimate of the residual is 1.5