Base of the tongue is attached to the:
The base of tongue constitutes the anterior wall of the oropharynx and can be inspected only by the use of a mirror or by a downward pressure on the tongue with a tongue spatula.
It is attached to the hyoid bone and mandible.
Reference: TEXTBOOK OF ANATOMY HEAD, NECK AND Brain, Volume III, second edition page no 191
Hyoid bone
Mandible
Hyoid bone and mandible
None of the above