Final answer:
Option (B), The belief that bulls are generally safe due to genetic selection is false.
Step-by-step explanation:
The statement that genetic selection has improved dispositions, and bulls are generally not dangerous anymore is false. While selective breeding can be used to favor certain behavioral traits in animals such as docility, it does not guarantee that all individuals of a species, like bulls, will be completely safe. Bulls can still be dangerous due to individual temperament, environmental factors, or instinctual behavior that is not fully eliminated by selective breeding. It's worth noting that aggressive traits in bulls may have been historically selected for bull sports, which are often dangerous civic events that serve as a rite of passage for youths in many cultures.
Selective breeding does indeed result in genetic changes in the offspring because it involves choosing individuals with desirable traits to reproduce. This anthropogenic process could potentially increase the prevalence of certain genes within a population. However, breeders try to avoid inbreeding in domesticated animals, which although they are indiscriminate, inbreeding can cause genetic disorders and reduced genetic diversity.
In contrast, natural selection can also lead to genetic changes in a population, such as the prevalence of traits that prevent pregnancies in female elk with low fat reserves. This is an example of how natural selection acts on populations in the wild, and these genetic traits become predominant as they offer a reproductive advantage under certain environmental conditions.