In a second experiment, a different kind of fly and blue light was used. The results are shown in the drawing. BLUE LIGHT 10 18 NV 1 18 2 ( 19 : 10 BLUE UGHT These data show that these flies respond to (respond means move to or away from):
1) Blue light but not gravity
2) Gravity but not blue light
3) Both blue light and gravity
4) Neither blue light nor gravity