Final answer:
To administer otic medications to a child over 3 years old and adults, pull the pinna up and back to straighten the ear canal.
Step-by-step explanation:
When administering otic medications to a child over 3 years old and to adults, it is recommended to pull the pinna up and back. This action helps to straighten the ear canal, allowing for easier application of the medication and ensuring that the drop reaches the eardrum more effectively. Ensuring correct technique when administering ear drops is important for both the effectiveness of the medication and minimizing discomfort.