How does one define the reality of an "object?"
Pick a non-physical object such as an emotion, belief or value.
What makes it real?
How do you know it is real and not merely imagined?
Do you feel positive, negative or neutral about the object and why?
This question is going to be very hard to answer for you given that how one justifies abstract (non-physical) objects in different ways.
The thing which make something real for a person is their own ability to identify the object based upon their own experience with the "object." For example, a person who has never experienced love will have a hard time defining it based upon the fact that they can not identify what it is based upon their lack of experience with it.
Therefore, what makes an abstract object real for a person is their experience with the "object," their personal defining of the "object," and the acceptance that it exists in the first place.
My suggestion is to identify an abstract object which people tend to disagree upon regarding a definitive definition of the object. First, you need to name your "object." Next, you need to define what your object means to you. Lastly, defend the fact that (given you have defined the object) the object exists and is real. Outside of that, once you define your object, it will be up to you to state if the object makes you feel negatively, positively, or neutrally.
I agree with #1 this is a question that is going to be very hard to answer. An object is a material that can be seen and touched by.
But if you were going to have to choose abstract or concrete object.
Abstract object is something you cannot touch but what you know and exists in your mind.
Concrete object is something you can touch.
An object is whatever you want it to be. What makes it real is the effects it has on you. This idea or emotion or whatever your abstract object is must first be planted in your brain whether conciously or unconciously. This idea will begin to grow and take effect and sooner or later it has occupied a portion of your mind....and vuala you have an object. Im not sure if this is making any sense but it does in my head.