One scientist did an experiment with a meter stick and pencil. the steps of the experiment are listed below.
1. hold a meter stick horizontally with one end on the nose and the other end pointing forward away from the body.
2. ask a friend to hold a pencil on the 50 cm mark of the meter stick.
3. look at the pencil and alternately open and close each eye.
4. observe how the pencil appears to move with respect to background objects.
5. repeat steps 3 and 4 by asking the friend to hold the pencil at 25 cm and 100 cm marks.
based on the experiment, what would the scientist most likely conclude?
parallax shift remains the same at all distances of stars from earth
parallax shift depends on the size of the stars with respect to earth
parallax would be most effective in measuring distances to stars which are very far away from earth
parallax would be most effective in measuring distances to stars which are close to the earth