Which of the following is not a reflecting mucosa
Based on function, the oral mucosa can be classified into –

Masticatory mucosa

Eg.: Gingiva and hard palate

Lining or reflecting mucosa

Eg.: Lip, cheek, vestibular fornix, alveolar mucosa, floor of mouth and soft palate.

Specialized mucosa 

Eg.: Dorsum of tongue and taste buds.
Lip
Cheek
Gingiva
Soft palate