The correct option is A Gymnosperms
The term 'gymnosperm' means naked seeds. They includes conifers and pines. Ovules in gymnosperms are not enclosed by the ovule as in angiosperms and lie naked attached to the megasporophylls.
Angiosperms have covered seeds as ovules are enclosed by the ovary. Bryophytes and Pteridophytes do not produce seeds.