I'm not sure but I think the answer is A. Plants. Then again I'm not 100% sure that this is correct
Science can answer many questions for example the speed of light, the frequency of pitch or sound, dna tests
Nodes
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Sensory neurons are the neurons responsible for receiving the information from the environment or the stimuli. This sensory neurons pass the message thru interneurons and then to Central Nervous System (brain and spinal cord) which then sends the signal to the motor neuron. </span>
The answer is B. Hope this helps!
Reasoning: Brown Algae and Dinoflagellates are both on the same branch, unlike other answers.