Which of the Following Provides Support for the Idea That

Multiple Choice

Which of the following provides support for the idea that the afternoon decrease in alertness experienced by people is a result of an ultradian rhythm?

A) This decrease in afternoon alertness occurs in night-shift workers as well as daytime workers.
B) This decrease in afternoon alertness lasts for more than 2 hours.
C) This decrease in afternoon alertness is still seen in people who skip lunch.
D) This decrease in afternoon alertness can be corrected with bright light exposure.