Final answer:
Weight gain of 2 pounds in one day should be reported to the nurse immediately in a patient with Congestive Heart Failure.
Step-by-step explanation:
The finding that should be reported to the nurse immediately is B) Weight gain of 2 pounds in one day.
Weight gain in a patient with Congestive Heart Failure can indicate fluid retention, which is a concerning symptom. Increased fluid retention can lead to worsening of symptoms and may require adjustments in treatment. It is important to monitor and report any sudden changes in weight as it could indicate a worsening of the patient's condition.