Final answer:
Polarizing sunglasses are useful for reducing glare from reflected light. A scientist working at the North Pole might require polarizing sunglasses because they can help them see clearly in the bright, snowy environment.
Step-by-step explanation:
A scientist working at the North Pole might need polarizing sunglasses because these sunglasses are designed to reduce glare from reflected light. When light reflects off surfaces like snow or water, it becomes polarized, meaning the electric field moves in only one direction perpendicular to the direction of the light's propagation. Polarizing sunglasses can block this polarized light, making it easier for the scientist to see clearly in the bright, snowy environment of the North Pole.