<span>Human papillomavirus (HPV) causes most cervical
cancers, as well as some cancers of the vagina, vulva, penis, anus,
rectum, and oropharynx (cancers of the back of the throat, including the
base of the tongue and tonsils). HPV vaccines are recommended for
preteen girls and boys to protect against HPV infection</span>
Explanation: The way the word expenditure as used in this concept is a noun refering to the application of energy as a result of bodily movement. It also talkes about the use of energy