One characteristic of objects that are being horded is that they are

a. always of great value
b. usually small enough to be stored in some sort of container
c. usually hidden or carefully guarded

I think it's 'c', but I'm not sure.

2 answers

You're probably right. But I could make a strong case that hoarded objects are of great value to the person who hoards them.
Ok. I think I am going to go with 'c' because if something is of great value to a person, that person would hide it and more than likely keep it guarded. So, 'c' kind of makes the most sense because it relates back to 'a.'