Final answer:
The class obtained a large example and the ratio of blue to orange tails is not 1:1 because the experiment aimed to highlight variation.
Step-by-step explanation:
The reason why the class obtained such a large example and why the ratio of blue to orange tails is not 1:1 is due to d) The experiment aimed to highlight variation. When conducting experiments, it is important to consider that there can be variation within the sample population. This variation can be influenced by factors such as genetics, environmental conditions, and random chance. In this case, the experiment aimed to show the natural variation in the ratios of blue to orange tails, rather than expecting an equal distribution.