Flowers, which evolved among the angiosperms, provide which of the following advantages?

Question

A-they are devices to attract pollinating insects and animals
B-they allow spreading of pollen to flowers of the same or a different plant
C-they get pollinated irrrespective of the conditions
D-they are mechanism by which plants overcome their rooted and immobile nature
E-they are vehicles to secure the benefits of wide genetic outcrossing

Answer 1

A. they are devices to attract pollinating insects and animals.
This the best answer but to some degree all could be an answer to the question except C. There is nothing that can insure pollination irrespective of conditions.