I believe the answer is C because the first two are mechanical hazards and C mentions plug which is electrical.
C; The Valence electrons spend more time around the atom of F
Hydrogen i suppose is the right one
Answer:
Explanation:
The melting of the chocolate pieces one by one showed that it was caused by heat flowing through the foil bridge. The transfer of heat happened between the foil bridge and the chocolate pieces because they were touching each other.