Answer:The question is not complete.
The condition are:
Variation of trait.
Differential reproduction.
Traits passed from parent to offspring.
Step-by-step explanation:
Natural selection is refers to characteristics or traits posses by organisms that will make it to survive and reproduce in it's environment thereby passing those traits to it's offsprings. The theory of natural selection was proposed by Charles Darwin. There are four conditions that allow natural selection to take place and they are; reproduction, variation in characters or trait, heredity and trait passed from parent to offspring.