(A)How long will it take for running shoes to wear out.
(B)It is focused on running shoes only.
(C)It is important to people who run a lot as they would like to know when they would most likely need to replace their shoes.
(D)We could ask the runners at stadiums to take part in our survey which is totally manageable.
(E)We could go to the stadiums and ask the runners to complete a small survey and that is totally manageable.
(F)It is accessible as it is easy to find joggers in the parks during the weekends
We chose these sites as they are the best links to know more about shoes and how to take care of them.