Answer:
The appropriate question to ask or action to take is:
b) Inform him that he may be assessed a penalty of $530 if he fails to provide all the information required.
Explanation:
The penalty for not meeting the due diligence requirements is $530 for tax returns filed in 2020. The practitioner must get Henry to fill the Form 8867. The purpose of this form is to ensure that the practitioner has considered all applicable eligibility criteria for certain tax credits, especially the American opportunity tax credit (AOTC), which Henry is applying for.