The correct option is B Martynia
Seeds which are dispersed by zoochory, i.e., by animals, either possess certain structural peculiarities to attract animals or carried by them unknowingly by sticking to their body.
Xanthium seeds are dispersed by zoochory but their seeds have hooks or spines on their surface.
Medicago seeds possess spikes on their surface which are dispersed by animals and birds. It clings to animal or bird body.
Tribulus seeds have sharp and rigid spines on their surface which helps in their dispersal by animals.
Martynia seeds possess cat's claw or tiger's claw like structure on its one end. It clings to animal body and dispersed easily.
Therefore, the correct answer is option B.