Hummingbird visits to artificial flowers of three colors were tallied during a 1-hour observation period. Sucrose concentration was identical in all flowers.
Which inference is best supported?
- A
Yellow flowers contain the most nectar.
- Bcheck_circle
Hummingbirds preferentially visit red flowers, possibly due to innate or learned color preference.
- C
Sucrose concentration drives the difference in visits.
- D
All colors attract hummingbirds equally.
Explanation
With sucrose held constant, the strong red preference must reflect a visual cue. Red is a well-known attractant for hummingbird foraging.