Final answer:
A complaint of chest pressure is a subjective finding as it is based on the patient's personal experience and report of symptoms.
Step-by-step explanation:
The subjective finding among the options provided is C) A complaint of chest pressure. Subjective findings are those that cannot be directly observed or measured by a healthcare provider. Instead, they are reported by the patient and relate to personal experiences of symptoms and pain. Examples of objective findings, which can be directly observed or measured, include pale, cool, clammy skin (A), obvious respiratory distress (B), and a specific blood pressure reading (D).