When people say "act your age," they are referring to age— a person's age based on date of birth?

When people say "act your age," they are referring to chronological age.

Explanation:

Chronological date can be defined as the date to count how many years a person has lived. The chronological date is mostly used in psychological tests. It is mostly used to compare the actions of a person like intelligence, activeness, etc to his/her age. So, when a person says to act your age, he/she means to take actions according to the experiences you have gained from the years you have lived.

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the packers and the chiefs played in the first super bowl, which was held in los angeles in 1967. -is the sentence that would stand out the most when scanning a paragraph.