Final answer:
Paula's approach to ensuring safety for Ricky is cautious and meticulous.
Step-by-step explanation:
In the given scenario, Paula's approach to ensuring safety for Ricky can be inferred as cautious and meticulous. This can be seen in her actions of checking Ricky's seat belt, making sure the car seat is properly installed, and driving carefully. Her attention to detail and carefulness demonstrate a cautious and meticulous approach to safety.