<span>Damien having sleepless nights with frequent waking up and not going back to sleep and few he is not able to wake up due to the functioning of brain. This condition of sleep issues is caused by poor functioning of the Pons which is an important part of human brain. Without Pons the brain does not have the ability to function.</span>
B. or C.
i would personally go w/ C.
Nations trade because...
B. They can't produce by themselves everything they need to survive
(The countries trade items with each other)