The number of blank determines what element the atom is from.
A. electrons
B. energy levels
C. neutrons
D protons

The answer is protons :)

The answer is a if u read the definition it makes sense

The need activity of the nurse is to suction discharges from the trachea. current treatment approaches in the pressing consideration facilities or crisis offices are corticosteroids and nebulized epinephrine; steroids have demonstrated advantageous in extreme, direct, and even gentle croup. in the clear instances of croup, anti-microbials are not endorsed, as the etiology is viral