Owen reveals his concern about his time commitments.
At the beginning of the conversation it seems as though Owen is uninterested in attending practice. His question to his dad starts "So, I guess" which reveals a lack of interest on his part. However, we learn the real reason of his hesitation regarding hockey practice at the end of the conversation. He tells his dad "I'm worried I can't manage everything." This shows that he seems overwhelmed with his school work and hockey. His time commitments are a concern for him.
Learn to trust yourself! The answer is indeed, "Him".
In order to complete this analogy, we need to understand the meanings of the first pair of words. To apprehend and to emancipate and antonyms, meaning they have opposite meanings - to apprehend means to arrest, and to emancipate means to free. Having this in mind, we need to find another pair of antonyms. The correct answer should be E. conceal : manifest, because to conceal means to hide, and to manifest means to show.