When a structure satisfies all the properties of a relation except for the first item—in other words, some entries contain repeating groups and thus are not single-valued—it is referred to as a(n)

the answer will be d

solution:

the auto-correct option of the auto-correct tool enables you to add and delete words that do not follow abbreviation rules because:

it is a feature that allows outlook to correct common spelling and typing errors and to replace characters with symbols. we can also can use auto-correct as a shortcut, which means we can type a small string of characters and have those characters replaced by a longer string.