The correct option is C Ophioglossum
Ophioglossum is known as adders-tongue. The name adders tongue is quite significant, due to the spore bearing stalk resembles like that of a snake's tongue. Ophioglossum reticulatum, for example, is estimated to have from 240 to 510 chromosomes in the haploid state, or up to 1020 chromosomes in the diploid state. Hence the correct option is C.