BEST ANSWER GETS BRAINLIEST!! PLEASE HELP

Maria is conducting a survey to determine the ages of 100 dogs in an animal shelter. Which of the following questions is an appropriate statistical question for this survey?

What is the number of dogs in the shelter that are more than 5 years old?
What is the average number of years a dog stays at the shelter?
How old is the youngest dog in the animal shelter?
How old is each dog in the animal shelter?