The correct option is D Persistant hairy styles
Anemone shows anemochory due to the presence of persistant hairy styles. The fruits are ovoid to obovoid shaped achenes that are collected together in a tight cluster, ending variously lengthened stalks, though many species have sessile clusters terminating the stems. The achenes are beaked and some species have feathery hairs attached to them.
Therefore, the correct answer is option D.