Which of the following are examples of safe medication dispensing and administration practices?

The correct choice highlights the importance of implementing multiple strategies to ensure safe medication dispensing and administration. Double-checking dosages is a critical practice that helps prevent errors in medication administration, as it allows healthcare providers to verify that the correct medication and dosage are being given to the right patient. This check serves as a safeguard against human error.

Using barcoding systems enhances this safety further by automating the process of tracking medications. When barcodes are scanned, they ensure that the medication being administered matches the prescribed medication in the patient's records, significantly reducing the risk of discrepancies. This technology is particularly effective in large healthcare settings where multiple medications may be prescribed to numerous patients.

Combining both double-checking dosages and using barcoding systems creates a robust framework for safe medication practices, making 'both A and B' the comprehensive answer that reflects best practices in medication safety. The other option regarding crushing pills can introduce risks, such as altering the medication's effectiveness or causing adverse reactions, and does not necessarily contribute to safe administration practices.