Crowdsourcing is used by mobile application that allows users to report the location of a pet that appears to be lost.
A mobile application is known to be a kind of computer app or program that has been made to handle or run itself on a mobile device e.g. phone, etc.
Conclusively, the option that best describes a system that uses crowdsourcing is the mobile application that allows users to report the location of a pet that appears to be lost and upload a photo that is made available to other users of the application and thus everyone can help to look for it.
Learn more about mobile application from
https://brainly.com/question/9477543
#SPJ1