Based on the cladogram, which group of plants is most closely related to the ancestors of all plants?

It considered that all terrestrial plant species that exist today have evolved from Rhyniophyta (a type of spore plants, compiled by the most primitive forms of vascular). Now terrestrial plants presents by the Moss family, psilotaceae, lycopsids, class of the Horsetail, fern, gymnosperms and flowering plants.  Based on the cladogram, It assumed that the ancestors of all existing plants are algae, particularly green.

i believe the answer is snake.