Final answer:
Conner is likely liable for Krista's injuries as the proximate cause of the accident. Negligence and duty to secure items in the truck bed are relevant legal concepts in this case.
Step-by-step explanation:
In the scenario described, Conner is likely liable for Krista's injuries as the proximate cause of the accident. Proximate cause refers to a cause that directly leads to an event or injury, and in this case, Conner's board falling out of the truck bed was the direct cause of Krista swerving and hitting the telephone pole.
Under the legal concept of negligence, Conner had a duty to secure the items in his truck bed to prevent them from falling out. Since the board fell out, causing Krista's injuries, it is foreseeable that such an incident could lead to accidents and injuries.
Therefore, option b) Conner is liable for Krista's injuries as the proximate cause of the accident is correct. It is important for drivers to properly secure their cargo to prevent accidents and injuries on the road.