Which one of the following shrubs produces fragrant flowers?

Correct option is A

Among the shrubs listed, Murraya exotica (also known as Murraya paniculata or Orange Jasmine) is famous for its fragrant flowers.
Key Points:
· Murraya exotica:
· It is an evergreen shrub.
· Produces small, white, highly fragrant flowers.
· The fragrance is similar to that of orange blossoms (hence the common name "Orange Jasmine").
· Popularly used for:
· Hedges and borders in landscaping.
· Perfumed gardens.
· The fragrance is especially noticeable during the evening and early morning.
Other Options Explained:
· (b) Hibiscus rosa-sinensis:
· Known for its large, colorful flowers, but they are non-fragrant.
· (c) Tecoma stans:
· Also called Yellow Bells; bright yellow flowers but without fragrance.
· (d) Russelia juncea:
· Known as the coral plant; produces red tubular flowers but not fragrant.