Answer:
The correct answer would be D) The spores release from the male cones
Conifers are sporophytes with two types of cones; pollen cones and ovulate cone.
The pollen cones are smaller in size and produce microspores which would develop into the pollen grains.
The ovulate cones are larger in size which produce megaspores which would develop into ovule.
The two gametes fertilized to produce a diploid zygote which develops into the embryo.