Critical Reasoning (CR) | Re: A photograph of the night sky was taken with the camera shutter open f

If the shutter speed is slow, it can create an effect called “motion blur”, where moving objects appear blurred along the direction of the motion or appear as streaks as stars in this question. The celestial object not necessarily a star may have emitted a flash only for a fraction of the time when the shutter of the camera was open to capture light. Thus D logically completes the argument.

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