The correct option is C Ferns
Circinate vernation is seen in ferns. Vernation is formation of new leaves or fronds. Circinate refers to leaves or fronds that are rolled up with the tip in the centre. This protects the tips of growing young tender leaves. Hence, circinate vernation is a term that describes the tightly coiled manner in which a fern frond emerges where the tender growing tip of the frond is protected within a coil. This structure resembles the head of a violin and hence it's called a ‘fiddlehead’.