Answer:
Ren could have asked his father the following three questions, in order to increase his understanding of his tax situation:
• What are tax credits and allowances?
• How does taxes help the government in discharging its fiscal responsibilities?
• Why is it important for me to claim these credits and allowances?
Explanation:
These questions are pertinent for Ren to ask his father since he is just starting out to pay his taxes and fill tax forms. There are more questions that Ren can still ask, as such questions should be geared towards increasing his understanding of his tax situation or responsibility, vis-a-vis the government's fiscal responsibilities to its citizens.