Answer:
"Compactness" is the right answer.
Step-by-step explanation:
- In mathematical or geometry, compactness seems to be the characteristic of some mathematical morphology or spaces which have its primary use during the analysis of parameters based upon such spaces.
- An accessible space protect (or set) is another series of open field sets shielding another space; i.e., every space position is throughout some series member.
So that the above would be the correct answer.