As it is used in paragraph of "Let 'Em Play God" the word plausible means something that actually could happen. I figured that out using context clues from the text,"In order to achieve this, one of the necessary ingredients of the formula is a series of plausible situations with people that are real." For example, having two students absent in a class is a plausible situation. Furthermore, referring back to the text, it states that you need to have plausible situations to create suspense. If somebody died and he or she was young the author couldn't say they died of old age, simply because it is not a plausible situation and it wouldn't add suspense.
