Answer:
The correct option is Noticeable.
Explanation:
Adverbs are commonly defined as modifiers, they are words that describe or modify a noun or a pronoun. Their main function is to provide further information about a noun/pronoun, making reference to like size, shape, color, to name a few. Particularly the word "Noticeable" is an adverb that means substantial, prominent, considerable, visible, marked.
Bearing the explained above, it could be said that from the options provided the correct option is Noticeable. Resulting in the sentence as follow: "The criminal had a very <em>noticeable</em> scar on his face".
