In each sentence, a word is omitted. Choose the word from the given options that can fit into the blank without changing the intended meaning.

The library is finally replacing its ___________ catalog system with a new, digital interface that's more user-friendly.

Correct option is B

The correct answer is:
(b) outdated
This word fits best in the context of describing an old catalog system being replaced by a newer, digital one. The other options do not logically fit the description of a catalog system.
Here are the meanings of the incorrect options:
(a) mitigated - Made less severe or intense; lessened in force or intensity.
(c) tempered - Moderated or adjusted; often used in the context of adjusting the properties of a material, such as metal.
(d) appeased - Pacified or placated; satisfying demands.
(e) abated - Decreased in amount or intensity; lessened or reduced.