For the following questions, choose the option which does not belong to the group (ODD-ONE-OUT).

Nursery (a room or place equipped for young children; a place where plants, trees etc. are reared for sale) does not belong to the group of flourish (grow vigorously, thrive) (a), burgeon (begin to grow rapidly, flourish) (b) and sprout (put forth, produce, begin to grow, put forth shoots) (d), they are growth-related terms.