Answer:
The three adjectives are:
1. thin
2. groundbreaking
3. fiber-optic
Explanation:
The above are the adjectives in the given sentence.
An adjective is a word which actually modifies, describes or explains a noun, pronoun or a noun phrase. It can be found before the noun, pronoun or noun phrase that it modifies.
A look at the given sentence, you will discover the following:
1. thin is an adjective that describes the noun "threads" in the sentence.
2. groundbreaking is an adjective that describes the noun "work" in the sentence.
3. fiber-optic is the adjective that describes the noun "cables" in the sentence.
