<em>More than five decades of research have found that optimism is a potent health tonic. Optimistic people remain healthier and live longer. They have better cardiovascular health—even after risk factors are controlled for, stronger immune function, and lower levels of stress and pain.</em>
The Lord of the Flies -- the pig's head on the stick -- symbolizes evil. This "Beast" prompts the boys to give into their dark, savage sides.
When Ralph cracks the skull of the lord of the flies, he returns the creature to being merely a pig's head on a stick. He destroys its symbolic power. No longer a Beast, the Lord of the Flies is just a pig's skull. Ralph's act symbolizes law and order winning the battle over evil.
The prepositional phrase is "after the test"
C just did the test your welcome