Which of the following is the State flower of Tripura?

Concept

A "state flower" is the official floral emblem adopted by a state's government as part of its set of state symbols (alongside the state animal, bird and tree); it is fixed by official notification, not by how common or decorative a flower is.

Application

For Tripura, the officially adopted state flower is the Nageswar — the blossom of Mesua ferrea (also called Ceylon ironwood / Nag Kesar / cobra-saffron), a fragrant white-and-gold flower. It appears in Tripura's official list of state symbols on the state government and state tourism portals.

Contrast

The remaining choices are ordinary garden flowers that are widely cultivated across India but are not the notified state flower of Tripura:

• Marigold — a common festive and ornamental flower, not an official state emblem.

• Rose — popular and widely loved nationally, but not a designated state flower here.

• Hibiscus — widely grown and the emblem of another state, but not Tripura's.