Final answer:
Customers needing assistance on board should notify EasyJet during boarding, which enables the crew to provide necessary support efficiently during the flight.
Step-by-step explanation:
If a customer needs assistance on board from the crew with EasyJet, the best time to notify the airline is option A) During boarding.
This allows the crew to be aware of any assistance a passenger may need before the flight commences, ensuring a smooth experience for the traveler. Notifying the crew during boarding is proactive and helps them prepare to provide the necessary support throughout the flight.
Customers needing assistance on board should notify EasyJet during boarding, which enables the crew to provide necessary support efficiently during the flight.