My answer is B. highest to the lowest.
In organizations especially in the military, the one who gives the order usually comes from the top position. It is transferred from the next to the highest position and passed until it reaches the lowest in rank.
In 1989, Japan's Hideaki Tomoyori recited 40,000 digits. The current Guinness World Record is held by Lu Chao of China, who, in 2005, recited 67,890 digits of pi.
Answer:
Natural selection is the unethical experiment
It's A) Encourage lots of little behaviors to add up into one large action.
Hope this helps, Good luck! (: