Is there a way to add a question based on the answer of a previous question?

I have a 'Preferred form of payment' Option for my clients in a dropdown. If they select 'Credit Card' I'd like for credit card authorization questions to populate.

It just doesn't make sense to ask for cc info if they chose "Check"

You can use Conditions to do this. You can review the user guide below that shows similar requirements for having multiple payment options on the form.

User guide: How to Set up PayPal Along with Other Payment Options

Here is a demo form you can test https://www.jotform.com/61894475075972