Agardener plant several flowering plants of the same species and noticed that about 10% of the plants produce order flowers in the others he keeps track of the distribution of flour size is over somewhere use as shown in the table below what explains these observations ? a: random chance led to the distribution of flower sizes b: overproduction of offspring resulted in more offspring deaths of the plant with smaller flowers c: speciation occurred because variation was present in the population d: natural selection occurred causing a shift in the distribution of traits within a species