Which statement reflects how culture has influenced the reproductive success of the Waorani and ...

Which statement reflects how culture has influenced the reproductive success of the Waorani and Yanomam people of the Amazonian Basin?
 
  a. Although aggression is highly valued for both Waorani and Yanomam men, the high mortality rates amongst aggressive males is causing these tribe populations to dwindle.
  b. Although male aggression is highly valued in both societies, aggressive Yanomam men are more successful than Waorani men in passing along their genes because Yanomam men stand down between conflicts.
  c. In contrast to other tribes of the same region, the Waorani and Yanomam people value peace and tranquility and thus have had the greatest success in passing along their genes.
  d. In contrast to other tribes of the same region, the Waorani and Yanomam people value peace and tranquility; however, because the Waorani, but not the Yanomam people, refuse to defend themselves, their gene pool is dwindling.