Final answer:
The evident sociological aspect in the statement about the baby daughter's reaction to a loud voice is the influence of media and external environments on a child's development and behavior.
Step-by-step explanation:
In addressing the question related to child exposure to inappropriate language and behavior, the sociological aspect that is evident in the statement about a baby daughter finding a loud voice funny is C) The influence of media and external environments. This option reflects the concern that external stimuli, such as the language tones and content coming from various sources, can impact a child's development and behavior. Sociological research indicates that while early language development is influenced by innate biological factors, the social contexts, including media and external environments, are crucial in shaping how language is acquired and used. The potential exposure to inappropriate language and behavior through media or the surrounding environment can have implications on what a child learns and how they perceive spoken language.
In comparison, options A and B, which focus on early language development and the impact of positive parenting respectively, do not directly address the question's emphasis on external influences. Option D, concerning the role of genetics in child behavior, is also less relevant here as the scenario focuses on environmental factors rather than inherited traits.
Therefore, while children are linguistic sponges and socialization plays a significant role in their development, the external auditory stimuli they are exposed to—including tone, content, and context—can profoundly influence their linguistic and social development.