A scientist obtains images of a particular star, which appears as four separate stars. Which phenomenon causes the star to appear this way?

Ithink it is letter b, i may be wrong but i think that is the answer

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.