When women experience cravings for different foods, it means that they experiencing a hormone related change which severely effects their sense of taste and other senses that can cause these kinds of cravings.
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Hello,
I believe you're asking which option is true. If so, A) do not require a medium. Unlike mechanical waves, electromagnetic (or light) waves do not require a medium. It has been proven that light travels in a straight line. Light waves are, in fact, electromagnetic radiation, and they can travel in a vacuum.
Faith xoxo
