A nurse is preparing to use the Z-track technique to administer a medication to a client. Which of the following is an appropriate action during this procedure?

The correct answer is B: Pull the skin 1.3 cm (1/2 inch) to the side. In the Z-track technique, pulling the skin to the side creates a zig-zag path for the medication, reducing the risk of leakage or tissue irritation. This action helps to seal the medication in the muscle tissue and prevents it from leaking back into the subcutaneous tissue. Choice A is incorrect because inserting the needle slowly and gently is a general good practice but not specific to the Z-track technique. Choice C is incorrect as aspiration is not recommended for intramuscular injections to avoid potential tissue damage. Choice D is incorrect as the Z-track technique requires a 90-degree angle of insertion to ensure proper delivery of the medication into the muscle.