Which of the following best completes the passage below?
When a group of individuals is incapable of passing on its genes, the theory of evolution predicts that the group will be unable to persist over a span of generations, being weeded out through genetic attrition. Therefore, if the theory of evolution is true, and given successful organisms’ tendency to reproduce at high rates, we should expect that _______.
【选项】
in a competitive environment, the organisms that persist over generations will be determined at random
选项是否正确？