Divide the following fractions and mixed numbers. Express answers in lowest terms, using mixed numbers when possible

By which of the following routes will medication have the quickest onset of action?

A) Intramuscular B) Subcutaneous C) Oral D) Intradermal

Buccal administration of a drug is accomplished:

a. by nasal spray. b. through a newborn's umbilical vein or artery. c. between the cheek and the gum. d. through an intraosseous needle.