Final answer:
Prioritize paying the bill due today to avoid additional late fees, followed by calling the driver to retrieve the cellphone, rescheduling the meeting, and then looking up flights.
Step-by-step explanation:
The question poses a scenario where multiple tasks with varying levels of urgency need to be completed. Considering factors such as time-sensitivity and potential consequences of delay, the bill due today should be addressed first. By prioritizing this task, you avoid late fees, such as the $10 charge and subsequent $5 daily fees mentioned.
After paying the bill, you should then call the driver to pick up the cell phone since it is personal property and might be urgently required by the client.
Next, reschedule tomorrow's pitch meeting to ensure all participants can adjust their schedules. Finally, looking up flights for the conference in London, while important, has a more flexible timeline and can be done after the other more immediate tasks are completed.