Question

highlight the word(s) modified by the word, clause, or phrase in bold. shrunk in the wash, fester addamss sweater looked like it would fit a chihuahua.

Explanation:

The bolded participial phrase "Shrunk in the wash" functions as an adjective phrase that describes which specific sweater is being discussed.

Answer:

The word modified by the bolded phrase is sweater (specifically "Fester Addams's sweater")