What is the difference between Electric/Gas and Full Hybrid EV-Gas?

I'm trying to figure out which ABS system my Gen 3 prius needs. The official Toyota parts website is asking me to choose between "Base 1.8L L4 - Electric/Gas" and "Base 1.8L L4 - FULL HYBRID EV-GAS (FHEV)"

Of course they have different ABS parts that are not compatible with each other, there's no definition of the difference, and entering my VIN simply brings me to the page asking for me to choose. Foolishly, I had a local mechanic replace these a year ago with used parts, and the new parts developed the same leak about a month after the warranty ended, so I'm less likely to go with whatever part number is in there in case the mechanice used the wrong part number.

How can I know which parts I need for my prius?

If I had to guess, I'd say Full Hybrid EV-Gas means plug-in, but I haven't found a single instance of that online. Even looking at trim levels available online, nothing shows FHEV.

While I ultimately want to know how to find the right parts for my prius, I'm also looking specifically for the correct Brake Master Cylinder and Brake Booster.

Any tips?