The answer is c) treat. Joy and bliss are feelings. They are a state of being. Treatment is generally a medical term. When you get drugs from the doctor for a disease then you have received treatment for your illness. Treat is something nice to have, not something you need. So if you have a lots of exercise you might TREAT yourself to a cake. Or if you are really stressed you might treat yourself to a nice massage.

The answer is c) treat. Joy is used to describe an emotional state. I can say: Dance brings me joy. Dance puts me in that particular state. I can also say: She is a joy to have around. This means she causes or brings the feeling of joy, or she is a source of joy. Bliss is also an emotional state, and now we use this word to say things like: Find your bliss. This means find the thing that brings you happiness. Treat here is like a surprise or a fun event. I could say: For a special treat, I am making my husband's favorite meal. The meal may bring my husband joy, but I can't say: For a special joy, I am making my husband's favorite meal. Treatment does not really fit with the other words in this case. Treatment can be used to talk about the kind of service you receive. For example: I received terrible treatment at that hospital, and I never want to go back. We also describe some types of medical and psychiatric and psychological care as treatment. I hope that helps! Also, great question!

Treat

Oh no, I left a comment instead of an answer! I'm an idiot!

Joy