Final answer:
Brock struggles with internal conflicts such as the responsibility of pet care vs. the desire to adopt, the challenge of making friends vs. seeking acceptance, the risks of the environment vs. sensory curiosity, the dangers of leaving safety vs. the lure of exploration, and societal disinterest in ancient fictions vs. personal intrigue.
Step-by-step explanation:
In "the last dog," the internal conflicts that create struggles for Brock include his realizations and desires about his environment and relationships. The first major internal conflict is that Brock understands the responsibility of caring for a puppy is significant, yet he deeply wishes to adopt Brog. This depicts the classic struggle between the logical awareness of impending hardships and the emotional drive to bond with another living creature.
Secondly, Brock is aware that social interactions can be complex and challenging but desires the acceptance and camaraderie of his podfellows. Thirdly, despite the potential dangers of the unfiltered environment, Brock's curiosity propels him to taste the water from the brook, highlighting the conflict between caution and the innate human pursuit of sensory experiences. Fourth, the fear of the unknown threats outside the dome is overshadowed by Brock's strong urge for exploration and freedom. Lastly, even though ancient fictions are seen as unpopular or irrelevant, Brock is drawn to explore these stories, signaling a conflict between societal norms and personal interests.