Pantothenic acid is coenzyme for which of the following reaction: (A) Dehydrogenation, (B) Reduction, (C) Transamination, (D) Acetylation
Answer is D. The functions of pantothenic acid are exerted through coenzyme A or CoA (A for  acetylation). Coenzyme A  is a central molecule involved in all  the  metabolisms (carbohydrate, lipid  and protein).
NOTE : Pantothenic acid as a part of CoA takes part in :

Fatty acid oxidation
Acetylation
Citric acid cycle
Cholesterol synthesis

Ref : Satyanarayana. 3rd ed, pg - 149