I would say the best clear answer is D, because A is a little bit unclear but I would say the best answer is D.
Why?
Mesh Topology is expensive considering more links as compared to Ring topology.
Open source is created and updated by a worldwide community of programmers and is available for free. Many students are in luck, as they can easily study publicly accessible codes and have a possibility to make better software. It also has lots of advantages, such as getting <span>high-quality results when the source code is passed around, tested and fixed.The most important thing - it<span> is a valuable learning opportunity for programmers and opportunity to improve their skills.</span></span>
Linux. You do not need Linux as an operating system for your website.
The IMG tag is an image in an HTML page.