Question 2
A flower is large, brightly coloured and fragrant, and carries nectaries. Which agent pollinates it?
The right answer is the one marked above.
Animals. Every feature listed is an adaptation for attracting them — and among animals it is mostly insects that do the work.
A flower is shaped by whatever carries its pollen, so you can read the agent off the flower. Wind- and water-pollinated flowers have nobody to advertise to, so they are small and dull with no nectar at all.