Answer - B. Vascular Spore Forming Plants. (Confidently Correct)
Reasoning - Ferns, Whisk Ferns and Lycopods are Vascular Plants. Now when we rule out C & D gives us two choices. Ferns, Whisk Ferns and lycopods contain Vascular tissues but do not produce seeds so they are use haploid/unicellular spores instead of seeds for the plants reproduction.