The small masses of nervous tissue in which many neurons have their nuclei are called...

Explanation

In Biology, the nervous system is responsible for communication between different parts of the body. The nervous system comprises of many different types of cells, but the most important of these cells are the neurons. The neurons are the cells responsible for transmitting signals between different parts of the body. The question is asking about small masses of nervous tissue in which many neurons have their nuclei. These small masses of nervous tissue are referred to as ganglia. Ganglia are found outside the brain and spinal cord and contain many cell bodies of neurons. They are responsible for processing and relaying information to and from the peripheral nervous system. Dorsal roots and ventral roots are two types of nerves that extend from the spinal cord. They are responsible for carrying sensory and motor signals respectively. Synapses, on the other hand, are junctions between two neurons where signals are transmitted from one neuron to another. Therefore, the correct answer to this question is option C: ganglia. Ganglia are small masses of nervous tissue that contain many neuron cell bodies and are responsible for processing and relaying information to and from the peripheral nervous system.