What in the peripheral nervous system (pns) brings information to the central nervous system?

Sensory Neurons

Explanation:

Sensory neurons are responsible for bringing in information to the peripheral nervous system (PNS). The information from PNS is then sent to the CNS for processing. Neurons constitute the basic unit of sensory system and are responsible for communicating the information between the systems. After the CNS processes the information, it sends the action signals through the motor neurons to the respective organs.  

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

b is the correct answer