Final answer:
The "half-age-plus-seven rule" refers to social acceptance of mixed-age relationships. This rule suggests that the youngest age that someone can date without it being socially unacceptable is calculated by taking half of their age and adding seven.
Step-by-step explanation:
The "half-age-plus-seven rule" refers to social acceptance of mixed-age relationships. This rule suggests that the youngest age that someone can date without it being socially unacceptable is calculated by taking half of their age and adding seven. For example, if someone is 20 years old, the youngest age they can date without it being socially unacceptable is 17 (half of 20 is 10, plus 7 is 17).