Which of the Following Makes Children Prone to Tonsillitis and Pharyngitis

Which of the following makes children prone to tonsillitis and pharyngitis?

A) not brushing their teeth and flossing after meals and at bedtime
B) frequent upper respiratory tract infections and being around other children who may be infected
C) eating large amounts of sugar and drinking high-sugar content drinks that encourage growth of pathogens
D) not bathing properly or frequently