Which key retains its uniqueness even after you remove some of the fields?
The | BLANK| retains its uniqueness even after you remove some of the fields.

It is the super key.

It is a combination of the keys inside a table that uniquely identifies each of the records inside a table. As an example, the primary key is the subset of the super key. And as far as the difference between the super key and the candidate key is that, it retains its uniqueness even if we step forward to remove some of the fields.

Explanation:

Please check the answer section.  

a) click on any cells in the range of data

b) click the data

c) click sort& filter group, click sort

d) select the column to sort by and then select a sort order

e) select the next column to sort by and select the sort order

f) click ok