Final answer:
Without the context of the specific literary work this question is referring to, it's impossible to determine who Toby asks first about baptizing Zachary.
Step-by-step explanation:
In the context of the question presented, it appears to be referencing a specific narrative scenario potentially from a novel or a literary work. Without the context of which book or story this question comes from, I cannot provide an accurate answer to who Toby asks first about baptizing Zachary. Answering this question requires information about a specific text in which these characters exist. If the text in question is provided, I could offer a more informative and detailed response. For now, due to the lack of context, I'm unable to determine if Toby seeks guidance from a priest, his mother, Cal, or directly asks Zachary about a baptism.