Final answer:
The subject in the provided sentence is 'the tiny fairies,' as they are performing the actions described.
Step-by-step explanation:
The subject in the sentence "The tiny fairies scattered stardust and twinkled in the night sky" is "the tiny fairies." The subject is the noun or pronoun that performs the action or is described in the sentence. In this case, it is the fairies who are performing the actions of scattering stardust and twinkling in the night sky. The phrase "the tiny" is an adjective describing the fairies, and the rest of the sentence provides information about what the fairies are doing. The verb "scattered" is the action the fairies are performing (scattering stardust), and "twinkled in the night sky" further describes their activity. So, option 4) "the tiny fairies" is the subject of the sentence.