The runner is most likely dehydrated, not enough sleep, or heat stroke
Answer:
The correct answer is single,double and triple covalent bonds .
Explanation:
A carbon atom can form a single bond with another carbon atom example ethane.
A carbon atom can form a double bond with another carbon atom example ethylene
A carbon atom can form a triple bond with another carbon atom example acetylene.
But during the formation of Carbon carbon single bond or double bond or triple bond the valency of carbon atom that is 4 is always maintained.
Because in episode 6 of twilight Bella needed Edward and he left her in the woods