Which procedure is following when using the scientific method to solve a problem? Identify something thought to be true and then set out to prove it
Identify a question, make observations, create a hypothesis, and then set up an experiment to test the hypothesis.
Do an experiment and then ask questions about it.
Find something scientists say is true and then ask questions about it.

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?