In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
A symbol that serves as an emblem of a group of people

* Totem: A natural object or an animate being, as an animal or bird, assumed as the emblem of a clan, family, or group.
Obelisk: A stone pillar, typically having a square or rectangular cross-section and a pyramidal top.

Minaret: A tall slender tower, typically part of a mosque.

Mast: A tall upright post, spar, or other structure on a ship or boat.