Charles Kuen Kao won the Nobel prize in physics in 2009 for groundbreaking work on fiber -optic cables, which use thin threads of glass or plastic to carry information in the form of light

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.

the answer to the question is d. i took the test a second ago and got a 100 on it. hope this .

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