Final answer:
The subjective data that would most likely indicate that a 1-year-old child has acute otitis media is tugging at the ear.
Step-by-step explanation:
The subjective data that would most likely indicate that a 1-year-old child has acute otitis media is tugging at the ear. Infants and toddlers who cannot yet speak may exhibit nonverbal signs suggesting AOM, such as holding, tugging, or rubbing of the ear, as well as uncharacteristic crying or distress in response to the pain.