Answer:
Kingdom Plantae
Step-by-step explanation:
All living organisms were classified into a large group called KINGDOM, based on the certain features or characteristics that they possessed. Organisms in Kingdom Plantae are multicellular eukaryotic organisms that are non-motile and usually found on substrate materials.
Organisms in this Kingdom are further divided into different divisions. The organism described to produce seeds and having a vascular system in this question belongs to a group under Kingdom Plantae called Angiosperms i.e. seed bearing plants.
All other divisions mentioned in the question do not produce seeds. Seed-bearing is peculiar to plants.