An organism that lacks neurons that perform integration
a) can be expected to lack myelinated neurons.
b) will not have a nervous system.
c) will not be able to interpret stimuli.
d) cannot receive stimuli.

The correct answer will be option-C

Explanation:

The nervous system performs the function of integrating the sensory information and then responding to the sensory information.

This function is especially performed by the central nervous system where the thalamus part of the brain is normally associated with the sensory neurons as they have nuclei which sense and analyse the information.

If the organism will not have the neurons which could perform the function of integration mainly the centers associated with sensing and analysing therefore, the organism will lose its capability to interpret or analyse the stimuli.

Thus, Option-C is the correct answer.

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the sphincter muscles at the end of the digestive tract is the anus.