<span> </span>Linux<span> is a computer operating system, like Microsoft Windows or Apple Mac OS they call it Free </span>Software/Open Source<span>, or Socially Responsible </span>Software<span>. Closely related is the concept of </span>Open Source Software<span>.</span>
Answer:
A and C are the only <u>legal</u> but unethical options
Crowdsourcing is used by mobile application that allows users to report the location of a pet that appears to be lost.
<h3>What is a mobile application?</h3>
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.
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