Formation of gametophyte directly from sporophyte without meiosis is

Answer: Option A

The formation of gametophyte directly from sporophyte without meiosis is Apospory.
Apospory is the development of 2n gametophytes, without meiosis and spores, from vegetative, or nonreproductive, cells of the sporophyte.
It develops in pteridophytes that have a mineral nutrition shortage due to insufficient minerals in the soil.