Final answer:
The adjectives in the given options are 'silver', 'streaked', and 'blue' found in option A. These words describe nouns, unlike the other options which contain nouns and a preposition.
Step-by-step explanation:
The adjectives in the sentence are the words that describe nouns. In the given options, the adjectives are found in option A: silver, streaked, and blue. These words modify nouns by providing more information about their color, appearance, or other attributes. Options B) and C) do not contain adjectives as they list nouns (airplanes, sky, three) and a preposition (across), respectively.