The correct option is D Corymb
The peduncle is the stalk of an inflorescence (group or arrangement of flowers on a plant). A corymb is a cluster of flowers on stalks starting at different levels but reaching the same height e.g., candytuft. A catkin is a slim, cylindrical cluster of flowers with no petals, usually wind-pollinated and sometimes insect pollinated e.g., oak. An umbel is an inflorescence which consists of a number of short flower stalks called pedicles which spread from a common point e.g., brahmi. A raceme is the cluster of flowers in which the separate flowers are attached by short equal stalks at equal distances along a central stem e.g., radish. Thus, the correct answer is option B.