Hi Gaby. I worked up a form and some code for you. This is how you can do it, but this should be considered a starting point or example, not a full solution.
You can download the form from here:
[SITE REMOVED]
Save that json file to your computer, then import it on your site using the Forms > Import/Export > Import Forms functionality. Once imported, click the link to edit the form, and make a note of the form ID. You will need that for the next step.
You can download the PHP code from here: Count frequency of submitted radio buttons - Droplr
That is PHP code which can be added to your theme functions.php file, or you can use a plugin such as this one to keep the code separate from the theme: Code Snippets – WordPress plugin | WordPress.org
If you are using the code snippets plugin, you can import that code from this file:
[SITE REMOVED]
(the Code Snippets plugin has an import feature)
Once you add the code to the site, the only change required is the form ID. It is 229 in my code. Change that to the ID of the form you previously imported.
Then, preview the form. Once submitted, check to see if the last five fields in the form are populated with the counts of the choices you made.
With those five counts fields (one for each possible answer) in the entry, you can use conditional logic on the confirmations and notifications, and can use those fields as comparisons in the conditional shortcode as well: Conditional Shortcode - Gravity Forms Documentation
Please give that a try and let me know if I left anything out, or if you have any questions for me. Thank you.