[amp_mcq option1=”bold” option2=”italicized” option3=”underlined” option4=”with key icon” correct=”option4″]
The correct answer is: D. with key icon.
A primary key is a column or group of columns in a table that uniquely identifies each row in the table. In the Field List of a table, the primary key appears with a key icon.
The other options are incorrect. A primary key does not appear in bold, italicized, or underlined text.