Answer:
Hypothesis A - Bees prefer flowers that produce more nectar and pollen than the flowers that produce less nectar and pollen producing flowers.
Hypothesis B - bees prefer bright yellow flower that are visible easily than the flower that are dark.
The hypothesis mentioned above are explains the less pollination in the purple flower in comparison to the yellow flower. These hypothesis are made on the study or knowledge provided by the question.
Thus, the correct answer is - Hypothesis A - Bees prefer flowers that produce more nectar and pollen than the flowers that produce less nectar and pollen producing flowers.
Hypothesis B - bees prefer bright yellow flower that are visible easily than the flower that are dark.