Final answer:
It is advised that drivers focus on driving as the most important task before starting the engine, rather than being distracted by phone notifications or other non-driving related activities.
Step-by-step explanation:
Before starting the engine, drivers are advised to perform pre-drive safety checks, which may include checking tire pressures. However, as the provided information seems to be focused on mobile phone usage, the correct answer here could be to focus on the directions or driving, which aligns with safe driving practices. Checking tire pressure (c) is generally part of regular vehicle maintenance rather than an immediate pre-driving task. While the given extracts stress the importance of avoiding phone use while driving, they do not clearly indicate which option is preferable before starting the engine. Assuming safety is the priority, focusing on driving (d) would likely be the most advisable action to take before starting the engine.