Answer:
The correct response will be "Tends to help turn towards the light".
Explanation:
- The eyespot should not be an eye or an observer but somehow it needs to respond to adjustments in some kind of a light source's brightness.
- The Euglena may do the photosynthetic activity to prepare the meal for themselves. The eyespot makes it travel toward illumination, the source of power for photosynthetic organisms.