Why does laughter seem to qualify as a biological functions?

Answer/Explanation:

­Philosopher John Morreall believes that the first human laughter may have begun as a g­esture of shared relief at the passing of danger. And since the relaxation that results from a bout of laughter inhibits the biological fight-or-flight response, laughter may indicate trust in one's companions.

answer; i believe the correct answer is (8) eight.

answer; to be the responsible party for healthcare delivery through medicare and medicaid programs;