Natural processes tend to increase the of thermodynamic systems. a. internal energy
b. temperature
c. entropy
d. Carnot efficiency

the answer is c

Explanation:

Most likely it's talking about temperature because it says thermodynamic

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

c (diamond),

sio2 (quartz)