Answer:
1.4.1 Constriction and dilation of the pupil
1.4.2 Between 0.2 and 0.4 seconds
1.4.3 The iris
1.4.4 Between 0.3
Step-by-step explanation:
1.4.1 The physical process illustrated by the graph is the constriction and dilation of the pupil.
1.4.2 The person was exposed to bright light between 0.2 and 0.4 seconds.
1.4.3 The part of the human eye that controls the size of the pupil is the iris. 1.4.4 The person moved from bright light to dim light between 0.3 and 0.4 seconds.
1.4.5 However, at 0.5 seconds on the graph, you can observe the exact size of the pupil indicated by the corresponding point on the y-axis.