Question

the data show the age of participants. the data show the number of races previously completed. the data show the heart rate of participants. the data are measured in minutes. the data are measured in years. look at the title and labels on the histogram to determine what is being represented and how the data are being collected. try again.

Explanation:

The histogram's x - axis is labeled "Number of participants" and the y - axis is labeled "Age (years)". The title mentions "Age of Race Participants". So, the data shows the age of participants.

Answer:

The data show the age of participants.