Final answer:
The best supporting statement for the claim that aggressive antler clashing behaviors in white-tailed deer increase successful reproduction is that it allows genetically superior males to mate, optimizing genetic fitness and ensuring the passing of desirable traits to offspring. This natural selection process strengthens the gene pool and improves species survivability.
Step-by-step explanation:
The statement that best supports the claim that aggressive behavior, such as antler clashing among white-tailed deer males, increases the chances of successful reproduction for the entire deer population is grounded in evolutionary biology. Male deer use antler clashing as a form of courtship behavior and territorial defense. The males that win these fights generally have superior strength and genetic qualities, and earning the right to mate with females ensures that these desirable traits are passed on to the next generation. This optimizes the deer population's genetic fitness and contributes to healthier and potentially more survivable offspring.
Adding to evolutionary success, female deer may select mates based on these displays of dominance, as they often indicate a male's overall vitality and ability to provide strong offspring, contributing to the species' sustainability. This strengthens the species' gene pool, as only the most fit individuals get to reproduce. Over time, these courtship and mating behaviors, including antler clashes, mean that the traits allowing for these successful encounters become more prevalent within the population, thus supporting the claim that such behaviors benefit reproductive success.