Answer
The correct answer is:
(b) partially polarized east-west
Work Step by Step
The light in the sky tends to be polarized tangentially to circles which are centered around the position of the sun in the sky. If the sun is directly overhead, the light at the horizon will be partially polarized horizontally. If we are looking directly north, the light will be partially polarized horizontally along the east-west axis.
The correct answer is:
(b) partially polarized east-west
