jQuery checking and getting radio input

Question

I attached part of the code below. So, how can I, with jQuery:
* check if one of the options is selected
* do differetnt things based on which one is selected. Say, alert Spam if yes and Eggs if no
* and do I absolutely need to add a submit button?

The answers I found online have only confused me.

https://code.sololearn.com/W8OXr5E22jFj/?ref=app

Answer 1

to check if a check box is checked::
if($("input").is("::checked"))
{}

Answer 2

Thanks 🇳🇬Brains