The correct option is
B Spurred
The flowers that have tubular corolla develop an extension that looks like a beak and has nectaries in it. Such flowers are said to have spurred corolla or the flowers with the beak. It is seen in larkspur and other flowers of the family Ranunculaceae.
A. Rosaceae flowers have scented corolla.
B. Spurred corolla bears beak or extension.
C. Ornithophilous flowers show pollination by birds.
D. Ornithochory is the seed dispersal by birds.
Hence, the correct answer is 'Spurred'