Which statement is an example of determining the relative age?

determining which individual is older based on the style of clothing they wore in a picture

knowing the age of a grandmother because she was a kid during the great depression

doing a genealogy search to find out a great, great, grandfather was born june 2, 1890

use birth certificate records to confirm the first birth occurred in the hospital on january 11, 1750

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?