Which of the following is a valid way for a person to express their wish to donate their body to science?

The option indicating that a person can express their wish to donate their body to science by authorizing the statement on a driver's license is valid because many states allow individuals to designate their wish to donate their body for scientific research or medical education directly on their driver's license. This method provides a formal and widely recognized legal means of indicating one's intent, as well as ensuring that the wish is documented and accessible to the appropriate authorities when the time comes.

In comparison, while submitting a form to a health department is a possible avenue for expressing this wish, it may not always be the most direct or effective method recognized across all jurisdictions. Informal communication, such as telling immediate family members or writing a note to place in the fridge, lacks the formal legal standing necessary to ensure that the individual’s wishes are carried out. Informal methods may lead to ambiguity and potential disputes among family members or may not be considered valid by legal entities, which is why relying on formal documentation like that found on a driver's license is preferred.