Structure which is not present deep to hyoglossus is:: (A) Glossopharyngeal nerve., (B) Genioglossus, (C) Hypoglossal nerve., (D) Lingual artery.
Answer is C. Structures present deep to hyoglossus are

Glossopharangeal nerve.
Lingual artery
Stylohyoid ligament
Genioglossus
Intrinsic muscles of tongue