Which sentence is appropriate for a formal e-mail? kids shouldn’t have to guess about how to save their money. i mean, if kids can learn how to stash their cash, they will benefit. a personal finance class could hook kids up with advice about money. schools should offer personal finance classes to teach basic economics.

The answer is: schools should offer personal finance classes to teach basic economics.

In any formal address, e-mails included, one should always use formal language in order to express clearly, directly, succinctly, and concisely the information and ideas that one wishes to convey to the reader in a respectful and non-ambiguous manner so as to avoid ambiguities or miscomprehension.