Final answer:
The nursing intervention to help the client gain 2 pounds is to provide high-calorie finger foods throughout the day.
Step-by-step explanation:
The nursing intervention that would be implemented to achieve the outcome of the client gaining 2 pounds by the end of the week would be Option A: Provide client with high-calorie finger foods throughout the day. By offering high-calorie finger foods, the client will have easy access to calorie-dense snacks that can help increase their calorie intake. It is important to ensure that the finger foods are healthy and nutritious.