Insert the Letter of the Choice That Best Matches the Phrase

Multiple Choice

Insert the letter of the choice that best matches the phrase or definition.
-The feature used to distinguish one record from another in a form.

A) (?)
B) Themes
C) Design view
D) control layout
E) Report Wizard
F) Pencil symbol
G) Find
H) Layout view
I) shading
J) #
K) ​!