Passavant’s muscle is formed by:

 # Passavant’s muscle is formed by:
A. Palatoglossus
B. Palatopharyngeus
C. Styloglossus
D. Superior constrictor

The correct answer is B. Palatopharyngeus.

The upper fibres of palatopharyngeus form a sphincter internal to superior constrictor. These fibres constitute Passavant's muscle, which on contraction raises Passavant's ridge on the posterior wall of nasopharynx, but Passavant's ridge is present within Superior constrictor. 

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