Why Are Gymnosperms No Longer Restricted to Moist Environments, as Are

Why are gymnosperms no longer restricted to moist environments, as are ferns and mosses?

A) Because they have a new adaptation, seeds, that allow gametes independence from water
B) Because they have a new adaptation, the phloem, that allows better transport of sugar
C) Because they have a new adaptation, vascular tissues, that allow for the transport of water
D) Because they have a new adaptation, lignin, that allows better transportation of water